Kate Upton Joins Instagram, Takes Sexy Selfies

The Sports Ilustrated model joined Instagram two days ago and already had 442,146 followers at last count. Of course, after flipping through her cleavage-filled photos, it's not hard to see why. Read on to have a see for yourself. And be sure to follow Upton at @kateupton. Heck, she might even follow you back. (Yeah, that's probably not going to happen.)