Lisa Lampanelli SINGS

'F**k It' I'm Fat!

9/7/2011 12:30 AM PDT BY TMZ STAFF
0906_lisa_vide_launchIt ain't over 'til Lisa Lampanelli sings -- and Monday night when her tour rolled through New York, she officially surrendered in her ongoing battle of the bulge ... THROUGH HILARIOUS SONG.

Check out the clip ... it's gut-bustingly funny.