Camille Kostek Gets Tiffany Haddish's Help EMBARRASSING Gronk on His Birthday! (Exclusive)

Camille Kostek gets Tiffany Haddish's help embarrassing her boyfriend, Rob 'Gronk' Gronkowski, by singing him 'Happy Birthday to You' on the red carpet at the 'Sports Illustrated Swim' issue launch party in New York City. Camille explains to ET's Emily Curl that, even though it's her night, she wanted her man to feel special on his birthday. Plus, Camille explains how 'SI' has helped shaped the woman she is today, and why the magazine fosters such a unique sisterhood amongst the models. The annual magazine is on newsstands now. More from Entertainment Tonight: https://www.youtube.com/channel/UCdtXPiqI2cLorKaPrfpKc4g?sub_confirmation=1 Exclusives from #EntertainmentTonight : https://www.youtube.com/playlist?list=PLQwITQ__CeH2Y_7g2xeiNDa0vQsROQQgv