Most Beautiful 2014

25 Beauties (and Hotties) at 25

From Amanda Seyfried to Armie Hammer, check out Hollywood's hottest crop of stars turning 25 this year

BRUNO MARS

The R&B pop star from Hawaii always had the It factor – just check out recently surfaced videos of him as a 4-year-old. Wearing an Elvis jumpsuit and doing an impersonation of The King, Mars says, "I like his singing and his dance and his lips." Two decades later, the "Grenade" singer is entertaining audiences with his very own throwback style.