Ashlee Simpson celebrated her 30th birthday with a Christmas-themed party yesterday (03.10.14).
The singer marked her annual milestone with a winter inspired bash at her home in California with her close friends and new husband Evan Ross.
A source told E! News: "One of Ashlee’s best friends threw her a ‘Dirty Thirty’ Christmas-themed party at Ashlee’s place last night.
"They had real snow brought in. Ashlee wore a coat and played in the snow.
"They have huge candy canes all over, Christmas trees, colourful lights draped around."
Evan – the son of legendary singer Diana Ross – took to his Instagram account after the party to post a picture of his gorgeous wife and her friends sitting in the artificial snow, next to a blow up snowman.
He wrote alongside the snap: "Last night made it @ashleesimpsonofficial favorite holiday Christmas in California. It was a snowy one. Harry birthday baby. (sic)."
It is not known whether her sister Jessica joined in the celebrations but the blonde beauty did take the time to wish her sibling a happy birthday on Instagram.
She said: "Happy Birthday Ashlee! There is no one I believe in more than you. Thank you for inspiring me everyday. I love you!!! #dirty30. (sic)."