Three-time SI Swimsuit model Melissa Keller celebrates her 34th birthday on Monday. The Minnesota native, who appeared in the 2002, 2003 and 2004 issue, got her start as a teenager and has appeared in ads for Noxzema, GAP, Revlon, L'Oreal and Aveda. In this 2004 video, Keller returns to her midwest roots with a photo shoot on a farm in Iowa where she poses on a bail of hay, back of a tractor and other locations photographer Jeff Olson could find. In honor of Keller's big day, we pulled together some of her best swimsuit photos. Happy Birthday Melissa!