Heidi Klum's daughter Leni, 19, wears thong bikini on Italian vacation

Heidi Klum's daughter, Leni, 19, is still soaking up the rays in a teeny bikini while vacationing with her boyfriend, Aris Rachevsky, in Italy.

Heidi Klum's Daughter Leni Flaunts Her Model Curves in a String Bikini on Yacht Vacation

Heidi Klum's daughter Leni, 19, looks incredible in a green bikini as she joins her boyfriend and pals on a luxury yacht in the South of France

Heidi Klum shows off bikini body in new photos from Italian family vacation

Leni Klum Shares Sweet Smooch in Green Bikini on Vacation

Heidi Klum's daughter Leni, 19, pairs bronze bikini with sheer lace pants

Heidi Klum's daughter Leni, 19, wears green bikini while in France

Heidi Klum slammed for 'inappropriate' treatment of daughter Leni, 19, as critics spot 'very weird' detail in new pics

Heidi Klum's Daughter Leni Stuns in Bikini Aboard Father's Yacht

Heidi Klum's Daughter Leni Rocks Bikini While Showing Off PDA With BF – Hollywood Life

Heidi Klum And Leni Klum Are Mother-Daughter Fashion Goals In This Loungewear Shoot