On December 24, Ryan Seacrest will turn 50.

Two years ago, Seacrest celebrated his birthday with a family gathering and playing games with balloon animals, according to Instagram.

Ricky Martin's 53rd birthday is on December 24, 2024.

To get into the Christmas spirit, Martin voiced a character in the Netflix holiday film "Jingle Jangle: A Christmas Journey."

The most famous expert on infectious diseases, Dr. Anthony Fauci, will turn 84 on Christmas Eve.

Fauci was born on December 24, 1940 — and while he might not have been a huge celebrity for the first seven decades of his life, Decade No. 8 is shaping up to be his busiest ever.

Louis Tomlinson's 33rd birthday is on Christmas Eve.

Tomlinson is the oldest member of One Direction, and the oldest of seven siblings.

Jimmy Buffett would have celebrated his 78th birthday on December 25, 2024.

Buffett died in September 2023 at the age of 76.

Of the many, many, albums Buffett released over his decadeslong career, he put out two Christmas albums: 1996's "Christmas Island" and 2016's "'Tis the SeaSon."

"Twilight" author Stephenie Meyer will celebrate her 51st birthday on Christmas Eve.

In 2020, Meyer released the eighth installment in the "Twilight" saga, "Midnight Sun," a re-telling of the first "Twilight" book from Edward's perspective.

Lee Daniels turns the big 6-5 on December 24 this year.

The Oscar-nominated director is celebrating his 65th birthday this year, 19 years after his directorial debut, "Shadowboxer."

Barbara Mandrell's 76th birthday is this Christmas Day.

The iconic country singer released a Christmas album in 1984, "Christmas at Our House."

Jeremy Strong was born 46 years ago on Christmas Day, 1978.

The "Succession" star has a few things to celebrate this year. He's been receiving awards buzz for his performance as Roy Cohn in "The Apprentice" and won a Tony for his role in "An Enemy of the People."

Sissy Spacek's 75th birthday is on Christmas Day.

The Oscar winner starred in the 2008 Christmas rom-com "Four Christmases."

On December 25, Canadian Prime Minister Justin Trudeau turns 53.

At 43 years old, Trudeau was the second-youngest prime minister in Canadian history when he was elected in November 2015.

Dido will also turn 53 on Christmas Day this year.

The British singer takes a page out of Paddington Bear's book to celebrate her birthday — since Christmas is already a holiday, she celebrates her birthday on June 25, according to The Guardian.

Annie Lennox's 70th birthday is on Christmas Day.

The "Walking on Broken Glass" singer released her first and only Christmas album, "A Christmas Cornucopia," in 2010.

Danish supermodel Helena Christensen will turn 56 on December 25, 2024.

Christensen first gained mainstream recognition 35 years ago when she starred in the music video for Chris Isaak's "Wicked Game."