We all know today's cheerleading staples: short skirt, and tiny tops - but what about before the barely-there uniforms? Take a look at the evolution of the hottest cheerleaders this season, the 49er Gold Rush girls and the Baltimore Ravens squads who will be cheering on their teams in Super Bowl XLVII.

The Baltimore Ravens joined the NFL in 1996 and the cheerleaders followed in 1998. The San Francisco 49ers, however, have been in the NFL since its inception in 1949. The name doesn't actually come from the year that the National Football League was formed, though. The 49ers are actually named after the gold prospectors that flooded Northern California back in 1849 and they're the oldest major professional sports team in California. The cheerleading squad is officially known as Gold Rush and was first created in 1983. One of their most famous alumus is Teri Hatcher, famous for her roles on Desperate Housewives and Lois & Clark.

Click the gallery above to brush up on more of the franchise's cheerleading history!

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