When it comes to legendary SI Swimsuit models, Elle Macpherson could have her own wing. The Australian model first appeared in the magazine in 1985 and made nine total appearances in the issue, including a record five covers. The Body, as she is appropriately nicknamed, isn't just a model. She is also a businesswoman, television host and actress. More importantly, she's celebrating her 49th birthday on Friday. So in honor of Elle, we present this gallery of her most classic Swimsuit pics.