Brooklyn Decker, Bar Refaeli

Behind-the-scenes of the upcoming Sports Illustrated Swimsuit Edition: Brooklyn Decker gets ready for a day's shoot (left) and Bar Refaeli is pretty (hot) in pink (right). Photos: MJ_Day Twitter feed

Oh, how we love online media. Early images from the upcoming Sports Illustrated Swimsuit Edition have been leaked on Twitter.

An unnamed source known on Twitter as "MJ_Day" has been tweeting away sneak peeks and behind-the-scenes shots of SI models including Brooklyn Decker and Bar Refaeli.

Just this morning, a new shot of Decker was released (above). Mrs. Andy Roddick looked tan and toned in a bright coral and fluorescent bikini while having her blonde locks styled.
Bar Refaeli, sports illustrated

Beach Bar: A sneak peek at the Israeli model on Sports Illustrated's swimsuit shoot. Photos: MJ_Day Twitter feed

Refaeli looks sultry as ever, showing off her curves in skimpy swimwear while hamming it up with the hair and makeup team.

What better way than tweets and photos straight from an undisclosed exotic beach locale to kick off a great summer weekend? Happy Friday!

If these pics have inspired you to tone up a bit (and really, how could they not?), here are some simple exercises to achieve a better bikini body.