3, 2, 1 ... Happy Birthday! Celebrities Born on New Year's Eve and Day

The Welsh star is still hard at work, even at 84, and is celebrating 45-plus years of sobriety, too. 

The Olympic champ is springing into her 26th year.

The actor turns 62 on Dec. 31, particularly poignant following his throat cancer battle.

The Swedish-born model — Tiger Woods' ex-wife — turns 41 on Dec. 31.

The South Korean singer can "Gangnam Style" right into his 44th birthday, Dec. 31.

The lead singer and guitarist of The Replacements turns 62 on Dec. 31.

The author of The Notebook and a handful of other romantic tomes was born on Dec. 31, 1965.

This New Year's Eve, the esteemed British actor turns 78.

It's down to The Wire as the actor fêtes his 59th on New Year's Eve.

The theater standout should sing "Happy Birthday" to herself as she turns 63 on Dec. 31.

Taggart, one-half of The Chainsmokers, "ain't ever getting older," though he actually is turning 32 on New Year's Eve.

The Police won't be coming after Summers, who celebrates his 79th on 12/31.

On New Year's Day, the star of stage and screen will be 84.

The hip-hop star, a.k.a. Joseph Saddler, was born on Jan. 1, 1958.