Kelsey Grammer's 3-month-old daughter was surrounded by hot chicks, booze ... and velvet ... at the Playboy Mansion Halloween party -- and TMZ has the pic to prove it.
We broke the story ... Kelsey brought baby Faith to the annual bash this weekend ... where she slept in her tiny car seat well past midnight while music BLARED and drunk people stumbled by.
In the pic, obtained by TMZ ... Faith is being monitored by an unknown hot chick -- who appears to be drinking -- with some empty and half-empty cups right next to the baby. It's unclear if the woman is by herself or with other people.
A source close to Kelsey tells us ... the actor doesn't feel he did anything wrong ... insisting Faith was safely cared for during the party and was never in harm's way.
So, we gotta ask ...