America's Got Talent star Heidi Klum took to Instagram on Saturday to show off some stunning vacation snaps from the sea - and if we were there, we would too!The supermodel turned TV judge posed in a bright orange Moschino bikini, with a strapless top that tied at the back and knotted-style bottoms.The two-piece was emblazoned with the Moschino letters and featured a high-cut leg that showed off Heidi's famous long legs.MORE: Inside America's Got Talent judges' luxurious homes: Simon Cowell,