Back off Tina Fey and Kristen Wiig -- Betty White 's still the funniest female comedian in prime time. The Illinois native is best known for her roles in The Mary Tyler Moore Show and The Golden Girls, but she's keeping busy with her newer hit sitcom, Hot in Cleveland.

While White has worn her share of see-through dresses, princess gowns and even sweat suits over the years, the funny woman has since perfected her uniform of black trousers, bright tunics and caftans. We appreciate her staying in her comfort zone, but we think she should certainly return to elegant gowns. Remember when she wowed everyone in that turquoise number at the 2010 Screen Actors Guild Awards ?

See more of White's style as she celebrates her 90th birthday this Tuesday.

In related news, White isn't the only celebrity who is 90 and fabulous! Check out this list of stylish seniors .

And have a look through our many other Style Evolutions here .

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