Katherine Heigl's five-year-old daughter gave her parenting tips after they welcomed her sister Adalaide into the family.
The 35-year-old actress raises two children with husband Josh Kelley, who she married in December 2007, and her eldest child Naleigh "immediately" gave her parents advice on how to feed, change and swaddle little Adalaide, now two, when they adopted her in April 2012.
Speaking on US chat show 'The Talk', she explained: "She's such a good big sister. She is such a princess, and she loves babies and she loves playing little mommy. Right when Adalaide came to us - we got her when she was five days old - we flew home with her.
"Naleigh was immediately telling me how to feed her properly, that I wasn't putting her down for her nap properly, that I wasn't doing the swaddle right, and she was only three-and-a-half."
Katherine also revealed Naleigh is very generous and even sacrifices her own treats to make her little sister happy.
The '27 Dresses' star added: "She will give her treat up to make Natalie happy, she will give her her toy to make her happy. I'm really trying to foster that relationship because it's so special."

Demi Lovato says her bipolar disorder is a daily struggle.
The 'Neon Lights' singer has faced numerous hurdles in life, including battling an eating disorder, drug and alcohol addiction and self-harm, and she credits medication and positive thinking for helping keep her manic-depressive illness in control.
She told Cosmopolitan for Latinas magazine: "It's a daily thing. I treat it with medication. Not everybody does that, but for me it works. That's what works for me - medicating, checking in with people, being honest, and being grateful for things."
Demi, who was named 'Fun, Fearless Latina of the Year' by the magazine, claims her main career motivation is being a good role model for her younger sister, 'Desperate Housewives' child star Madison De La Garza.
She explained: "When I was younger, I needed someone in the spotlight to idolize, who stood for positivity and light and happiness, and wanted to change the world. And because I didn't have that, I realised, I want to do that, if only for my 12-year-old little sister."
The 21-year-old star proudly revealed her birthday last summer was a turning point in her life because she was happily sober for the first time in years.
She explained: "I was used to drinking and doing drugs on my birthday. I always imagined my 21st being a huge party where I'd get s**t-faced and go crazy. But I realized that there's so much more to life than that."

DJ Diplo's mother is planning on "grilling" Katy Perry about her relationship with her son.
The 'Roar' hitmaker and her musician friend - who were first linked at the Coachella Valley Music and Arts festival last month - are seeing one another and Barbara Pentz is excited to meet the star before their romance gets serious.
Talking to RadarOnline.com, she joked: "He hasn't mentioned bringing her home to mama just yet. But I think he would before it gets serious.
"Of course, she's got to be grilled by the mum!"
Barbara admits Diplo - real name Thomas Pentz - hasn't confided in her about the budding relationship but insists he has told his dad and they celebrity couple are planning on taking it slow.
She revealed: "He hasn't discussed it with me, but he did with his dad. "He said 'we're just hanging out. We're just friends right now.'
"I don't think it's a big deal right now. I don't think they'll be wedding bells yet.
"They're both doing their own things right now and on opposite coasts. He doesn't seem to be making a big deal about it."
She did wonder if the rumours were true when news about their romance first broke since the pair both like attention.
She explained: "I wondered if it was a publicity stunt. It did occur to me. They both do like the cameras."
Barbara definitely approves, she added: "She seems like a lovely girl."
Katy was previously married to Russell Brand and split from her last serious boyfriend John Mayer earlier this year after 18 months of dating. Diplo was in a relationship with M.I.A. between 2003 and 2008.

Jennifer Lopez showed off her long luscious legs as she was seen leaving the restaurant, Gracias Madre, in West Hollywood wearing a kaleidoscope effect shift mini dress.

Usher was all smiles when he was spotting leaving lunch at Via Aloro in Beverly Hills. The 'Scream' singer dressed in all black and wore dark sunglasses.

Justin Bieber made hundreds of teenage girls in New York very happy as he appeared above the sunroof of his SUV to say hello as they crowded round the vehicle. The popstar was spotted shaking hands, giving high fives with fans before making his way bac...

Christina Milian looked cute in a festival inspired outfit during lunch at La Piazza restaurant at The Grove in West Hollywood. The singer wore a bright palm tree printed t-shirt and sported a floral headband.

Suki Waterhouse cut a glum figure at the Chiltern Firehouse for a fashion party in London. The model - who is dating Bradley Cooper - turned heads when wearing a chic pink coat and shift dress, but kept her head down to avoid the cameras.

Zoe Saldana made a glamorous arrival at JFK airport in New York wearing a grey knitted jumper over a long t-shirt and grey skinny jeans. The star turned heads by carrying a multicoloured snake print travel bag.

Kate Bosworth looked chic as she arrived hand-in-hand with her husband Michael Polish and at JFK airport in New York. The actress sported a knitted top, a short white skirt and an edgy leather jacket.

Gwen Stefani showed off her trim post baby figure following the birth of her her third son, Apollo nearly two months ago on her way to an acupuncture clinic in Los Angeles. She dressed down in a tailored black blazer and harem trousers

Jessica Biel sported a kooky pair of green sunglasses as she was seen catching a flight from LAX in Los Angeles to Amsterdam. The actress looked casual in a white tank top and trousers paired with a long black cardigan.