Heidi Klum Nightclub Face Sucking With 27-Year-Old BF

3/4/2014 11:04 AM PST
0304_heidi_klum_kissing_boyfriend_launch_v2Heidi Klum's not afraid of a little PDA -- donating some fresh spit to her young art dealer boyfriend Saturday night at a Hollywood nightclub ... in the middle of the crowded dance floor ... and TMZ has obtained photos.

The DFMO (dance floor make out) went down at 1 OAK -- Klum grabbed 27-year-old Vito Schnabel's face and passionately kissed him in front of everyone.

She looks really into it. Vito looks like a prom virgin.

Then again, he's the one dating a supermodel.