Brooks Nader and her sexy sisters went skinny dipping in Miami for Miami Music Week … well, kinda.

Check out these photos of the Sports Illustrated Swimsuit model at The Standard Spa in Miami on Thursday night … she’s hosting SkinnyDipped snack brand’s Sunset Session … and looking like a snack herself.

Brooks and her sisters, Sarah Jane, Grace Ann, and Mary Holland Nader, pulled up in a yacht in full Miami glam … and they partied with a bunch of famous folks … like Diplo and David Grutman.

The party people bounced between the dance floor and the deck … sipping cocktails and snacking on SkinnyDipped snacks … with DJ Carlita handling the ones and twos.