Elsa Hosk on the beaches of St. Barths

On Sunday Victoria's Secret beauty Elsa Hosk, 27, modeled two barely-there bikinis on the beaches of St. Barths.
Although she was solo for this photo shoot, two days prior on Friday, the former Guess girl joined fellow catwalk stars Lily Aldridge, 30,  and Martha Hunt, 26,  for several group shots on the same island.