It's a big day for Britney Spears: the pop icon celebrates the big 3-0. And throughout her career, which started when she was a wee one on The Mickey Mouse Club, Britney has supplied us with cool beats, hip dance moves, and plenty of beauty fodder. For instance, she almost single-handedly brought newsboy caps back into the mainstream, making the casual head-topper an instant trend.

But that's not all Britney has impacted when it comes to beauty. Here are five more ways she has set trends over the years.

Source: WireImage

Source: 6 Ways Britney Spears Changed the Beauty Scene