By Grace Gavilanes
Updated Nov 13, 2014 @ 7:17 am
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Gerard Butler Birthday
Credit: Mike Marsland/WireImage

Happy birthday, Gerard Butler! The Scottish actor rings in his 45th year today. Best known for his effortlessly chic style and undeniable sex appeal, the actor has starred in a medley of films that range from action to romantic comedies.

Most recently, the star is swapping his T-shirt and jeans for a more refined look to front the Boss Bottled fragrance campaign from Hugo Boss. Although a suit and tie work really well for Butler, the actor prefers a much more laid-back look. "My style is very simple. I don’t have a lot of appendages," he tells InStyle. "I love to wear a pair of kickers, a pair of beaten up jeans and an old T-shirt, and maybe a cool leather jacket."