It's Christmas in California! Ashlee Simpson celebrated a holiday-themed 30th birthday bash with friends and family on Friday, Oct. 3.

It didn't take long for Taylor Swift to pop on Instagram to share her 30th birthday party album from her big night. See all the shots she shared.

It was a Swiftmas party. She's in the process of trying to trademark "Swiftmas," and what better way than throwing the ultimate Christmas-themed birthday party? Swift went all out with the holiday ...

Taylor Swift captioned a slideshow from her Christmas-themed birthday photo booth that read, "Happy birthday but make it Santa." ...

On December 18, singer Billie Eilish turned 21 years old and threw a star-studded Christmas and holiday-themed birthday bash in Los Angeles to celebrate.

Inside Billie Eilish’s Celebrity-Packed 21st Birthday Party Kendall Jenner, Hailey and Justin Bieber, Doja Cat, Lil Nas X, and more showed up for the Christmas-themed bash.

Erina and Ben Napier celebrated daughter Mae's third birthday with a Christmas-themed party, complete with a visit from Santa. The HGTV co-hosts share daughters Helen, 6, and Mae, 3.

I remember, just shy of my 27th birthday, my mother reminding me numerous times, and then checking on me often to make sure I did, write, and mail out thank you notes to people who gifted us for our ...

Happy Birthday, Isaac Newton: Birth of Physicist Who Discovered Gravity Celebrated on Christmas Day Published Dec 25, 2017 at 5:21 PM EST ...

Lindsay Lohan shared rare photos on Instagram for a birthday tribute to her sister Aliana Lohan when she turned 29.

Shilpa took to her Instagram Stories and shared a bunch of photos from Adira’s fun-filled Christmas-themed birthday bash.

Happy birthday and a marry Christmas! Billie Eilish celebrated her 21st birthday over the weekend with big, Christmas-themed festivities.