Oh yeah, it feels like it’s my birthday! Check out supermodels Nina Agdal (in blue bikini top) and Cailin Russo (in orange bikini top) hanging out on a photo shoot. The 21-year-old Sports Illustrated Swimsuit beauty can certainly turn up the heat all by herself but in this case it didn’t hurt to have a partner in 19-year-old Cailin. The girls are wearing complimentary bikinis which show very well. Don’t you wish you were at least a fly or frog or something on the set?