Katie Price says she punched her friend in the face after learning she'd slept with her husband.
The former glamour model - whose former lover Kieran Hayler had an affair with her Jane Pountney - has claimed she was so angry she "knocked half her front tooth out".
She told The Sun on Sunday newspaper: "The red mist came down and I marched over and grabbed Jane by her hair extensions.
"I can't remember everything because it was a blur but I'm pretty sure I landed a punch on her face and knocked half her front tooth out and left it wobbling. I hope so anyway."
Katie - who insisted Jane still hasn't apologised for the affair - discovered her husband's cheating during a holiday in west Africa when she caught them kissing on the beach.
She added: "It was very dark but as I got closer to the beach I could make out two figures near a pile of stacked sunbeds. That's when I stood perfectly still for 30 seconds watching my best friend kissing my husband.
"I felt physically sick. Then the red mist came down. Jane tried to tell me it wasn't what it seemed ... Kieran looked proper scared.
"Jane didn't say sorry then and hasn't said sorry to this day."

Frankie Sandford has married Wayne Bridge.
The Saturdays singer tied the knot with her soccer-playing partner - with whom she has nine-month-old son Parker - yesterday (19.07.14) at Woburn Abbey in Bedfordshire, east England and it is said she "looked beautiful".
A source told the Sunday Mirror newspaper: "It was an amazing day. Frankie looked beautiful and Wayne very handsome when they tied the knot, Frankie was crying her eyes out.
"Marrying Wayne makes her life feel complete."
Their big day was made all the more special when boy band JLS - whose member Marvin Humes is married to Frankie's band mate Rochelle - reunited for a special performance to entertain guests.
Meanwhile, it was previously reported they were planning their extravagant summer ceremony with the help of Bentley's Entertainments, the firm that organised Victoria and David Beckham's lavish bash in 1999.
However, rather than going for a huge, glitzy bash, the couple had asked guests to protect their privacy by not putting any wedding photos online.
An insider previously said: "Frankie and Wayne want to keep the ceremony as private as possible. Cameras are allowed, but they have requested that no pictures are posted on social media."

Adele is reportedly undergoing "photo-healing therapy" to cure her fear of being pictured.
The 'Skyfall' singer is said to have a phobia of being caught on camera, and she has been looking into ways to overcome it ahead of her huge music comeback in the near future.
Speaking to the Daily Star Sunday newspaper, a source said: "Adele has always been camera shy but with her big comeback imminent her fear of being thrust back into the limelight is growing.
"She knows she will have paps following her every move when her album is released and wants to be better prepared.
"A close friend recommended Adele got in touch with a photographer in the US known as 'the photo healer' for some Skype therapy sessions."
It is said the star been taking "a series of one-hour sessions" to help her overcome her fear.
The insider added: "He has been coaching the singer with a series of one-hour sessions which include teaching her to overcome her deep-rooted fears and anxieties associated with being photographed."
The treatment is said to include manipulating her "photosphere", posing techniques to hide problem areas and maximise her assets, building her confidence and figuring out the best angles for pictures.

Karen Gillan has been praised for shaving her head for 'Guardians of the Galaxy'.
Marvel Studios boss Kevin Feige thinks it's "really cool" the 'Doctor Who' actress was willing to show such commitment to her part as Nebula by going bald in the new intergalactic superhero movie.
He said: "She was willing to shave her head and she not only ended up shaving her head, but at Comic Con last year she came out on the panel in a wig and dramatically revealed it - it was so ballsy and it was so awesome. And she did all of her behind-the-scenes interviews completely bald and she is beautiful with hair and without hair, so it was really, really cool that she was willing to do that."
Feige went on to praise Gillan's performance in the movie, adding to BANG Showbiz: "Her audition was good and Nebula, the character she is playing, is a conflicted character and needs to have a number of different layers and a performance that comes through."
The Hollywood producer insists Gillan's popular role as Amy Pond in the sci-fi series didn't influence director James Gunn's decision to hire her, but concedes her strong fan base is only a positive.
He added: "It was a nice bonus that there was a fan base from 'Doctor Who', but that wasn't the driving factor."

No Devotion will "definitely never" play Lostprophets songs.
The Welsh group disbanded after frontman Ian Watkins was jailed for 35 years for child sex offences in December, but the remaining members - Lee Gaze, Stuart Richardson, Mike Lewis and Jamie Oliver - now formed a new band with ex-Thursday singer Geoff Rickley, but won't be paying homage to their previous work when they go on the road.
Guitarist Lee said: "It's always at the back of your mind, it's a raw nerve. We have every right to carry on writing music, but you do think about how people will take it.
"We'd definitely never play the songs again. We can take some good stuff from it and some bad stuff and just bury it in a box at this point, but I don't think we'd ever revisit anything."
Lee admits he has no "regrets" about the end of his former band, except for the circumstances, but he does feel embarrassed when asked about his musical background.
He added to NME magazine: "We did Lostprophets for a long time. I flirted with loving it and hating it for many years for different reasons.
"So in the bluntest way possible, I don't have any regrets about the band being finished; I obviously just wish it wasn't in the circumstances that it was.
"You can't ever mention it to anyone, you know? We were really proud of it, whether people liked us or not, we came from the f***ing middle of nowhere.
"Now, when people ask what bands I've played with, my answer is just, 'Eurgh'. It's an awkward position to be in."

Kim Kardashian and Kanye West have paid $500,000 to hire a body double of their daughter.
The couple are concerned about the attention 13-month-old North receives from photographers, so have taken drastic measures to allow the youngster and her nanny to go out undetected.
A source told Britain's Grazia magazine: "Kim and Kanye hired the lookalike to shield North from the paparazzi.
"There were auditions held in LA at a specialist agency and in the end they found a child who is the spitting image of their daughter.
"They also hired a body-double nanny, who they hope will really throw paps off the scent."
North isn't the first celebrity offspring to have a double, as it was revealed last year that Suri Cruise - the daughter of Tom Cruise and his ex-wife Katie Holmes - also had a decoy.
However, the doppelganger's cover was blown when they were pictured minutes apart wearing matching outfits.
Suri's lookalike was spotted just weeks after it had been claimed Tom had beefed up his daughter's security after meeting with risk analysts and abduction experts.
A source said at the time: "They have talked with them specifically in relation to Suri and her well being.
"These guys deal with kidnap threats of families and children for super rich people and corporations.
"They work in high risk territories and targets around the world. They advise on how to best prevent subjects being placed in compromising situations, while offering protection solutions, too."

Katie Price has likened herself to an elephant.
The pregnant former glamour model - whose husband Kieran Hayler cheated on her with her best friend Jane Pountney earlier this year - has alluded to the shocking scandal, claiming that like the majestic mammal she forgives but never forgets.
She said: "I'm pretty similar to an elephant - I have a few wrinkles, hardened skin, a flat bum. But most of all, they say elephants never forget - I sure don't."
Given her affinity to elephants, 36-year-old Katie - who has children Harvey, 12, Junior, nine, and Princess, seven, from previous relationships, and 11-month-old Jett with Kieran - has taken great offence to American cheerleader Kendall Jones, 19, who recently caused controversy by posing with dead animals she had killed on a hunting trip in South Africa.
Katie wrote in her column for Now magazine: "I'm a bit of an animal lover with all sorts of creatures at Pricey's Farm, including four dogs, two cats, 40 chickens, 20 ducks, two peacocks, five geese, five horses and two goats.
"Maybe it's my pregnancy hormones ... I've found myself welling up.
"I saw pics of Kendall 'celebrating' her kill - a lion, elephant, rhino ... the list goes on. Shocking, but simply, why? These animals are in their own environment 'surviving' against their own daily predators - but then along comes another 'animal' predator with a gun."

Jennifer Garner is the "chief executive officer" of her household.
The 42-year-old actress has revealed she takes it upon herself to organise the differing schedules of her husband, Oscar winner Ben Affleck, and their three kids - Violet, eight, Seraphina, five, and two-year-old Sam - and doesn't think they're any different than the "average family".
She explained: "There's nothing like brain surgery about it - it's all logistics and schedules and remembering to pack lunches, and who has a karate class after school, and thinking about what food we already have in the refrigerator, and what I need to buy more of to cook dinner.
"I was writing cheques this morning to various people who have done things around the house and I started to laugh because I suddenly thought, 'I bet Ben doesn't even know this person's last name, let alone how much we pay them.' But that's how we divide the jobs."
The 'Dallas Buyers Club' star admits it is a "juggle" to maintain her career, support her husband's career and take care of the household.
Jennifer told Britain's HELLO! magazine: "There's always a ball up in the air and you just hope you manage to get your hand out to catch that ball before it splats to the ground.
"I'm constantly thinking, 'OK, I have this kid starting pre-school and that kid starting kindergarten this fall so I need to be home for that chunk of time, and my husband is going to be doing this at that time, so I need to be home then.' "

Gemma Merna says her "tight" 'Hollyoaks' outfits force her to stay in shape.
The 29-year-old actress says her alter-ego Carmel McQueen's love of skin-tight dresses ensures she doesn't miss gym appointments and maintains a healthy diet.
She said: "My go-to diet is the LBD Plan. It's perfect if you have an event you want to be in shape for - or in my case, playing Carmel, who wears the tightest outfits ever!"
Gemma's diet usually consists of healthy protein and vegetables, but she can't resist the odd Indian curry as a treat.
She explained: "[I have] a balanced lunch and dinner. I'll have chicken with vegetables and brown rice, so you get all your meat, vegetables and carbohydrates.
"I'll have a takeaway night when I want to treat myself to an Indian and a chocolate bar once or twice a week."
The blonde beauty also credits working out early in the morning with helping her prepare for a long day of filming.
Gemma told Now magazine: "I do wake up and think, 'Oh, I don't want to go!' But working out in the morning gives me so much energy throughout the day, so it's worth it."

Britain's Prince George is walking on his own.
The adorable son of Prince William and Duchess Catherine is about to have his first birthday on Tuesday (22.07.13) and to celebrate the royal family have shared a first official photograph of him taking some steps.
The photo was released on the official twitter feed of Clarence House, and accompanied by a caption which read: "Look who's walking! Here's our little Prince ahead of his 1st birthday on 22nd July #HappyBirthdayPrinceGeorge"
The picture was taken earlier this month at the Natural History Museum in London by photographer John Stillwell.
He told People magazine: "He's quick on his feet. He was walking towards me - I was kneeling down to take the picture and he was on top of me as soon as he started walking. He was very quick. He looked really steady on his feet."
In the picture George is wearing a pair of light blue dungarees and appears to have had his very fair hair combed into a parting.
William and Catherine are throwing a Peter Rabbit-themed birthday party at the Middleton family's house today, while George will spend his actual birthday at Kensington Palace in London with his father's side of the family, including his grandfather Prince Charles, and great grandmother, Queen Elizabeth II.

Christina Milian is "hooking up" with Lil Wayne.
The 'AM to PM' singer sparked rumours of new romance earlier this week when she was pictured holding hands with the heavily tattooed rapper, and friends say they have been getting on very well together.
A source told Us Weekly magazine: "It is totally true. They are hooking up."
Milian, 32, and Wayne, 31, looked very cosy as they attended the 2014 ESPY Awards in Los Angeles on Wednesday, July 16, sitting next to each other at the event and sharing plenty of jokes.
Christina is newly single after splitting from fiance Jas Prince just over a month ago.
At the time she wrote on her Instagram page: "There comes a time in life, when you walk away from all the drama and people who create it. Surround yourself with people who make you laugh, forget the bad, and focus on the good. Love the people who treat you right.
"Pray for the ones who don't. Life is too short to be anything but happy. Falling down is part of life, getting back up is living."
Christina - who is signed to Wayne's Young Money record label - also has a daughter with producer The Dream.
Wayne was previously married to Antonia Wright between 2004 and 2006, with whom he has a daughter, Reginae, and he also has three other children who were all born to different mothers.

Angelina Jolie has landed roles for all six of her children in 'Cleopatra'.
The actress and her fiancé Brad Pitt have previously said they didn't want their brood - Maddox, 13, Pax, 10, Zahara, nine, Shiloh, eight, and five-year-old twins Vivienne and Knox - to follow them into acting, but it appears they may have changed their mind after they all appeared on set together ready to film.
'Cleopatra' is also rumoured to star Brad Pitt, which would make it the first film he and Angelina had appeared in together since 2005's 'Mr and Mrs Smith', where they first met.
A source told the Daily Mirror newspaper: "Their whole family life is rooted in films but Brad and Ange didn't want the children to follow in their footsteps. However, acting is in their genes, and it could turn out to be the start of something big for the next generation."
Vivienne has previously appeared alongside her mother in 'Maleficent', but Angelina said she only let that happen after a long discussion with Brad.
She said: "I only put Vivienne in the film because the other children her age would be scared of me because I looked quite scary as Maleficent.
"Neither one of us want our children to be actors, Brad and I, but it was just I really couldn't ask another four or five-year-old to do it because kids on set did actually get scared and they would cry when they would see me."