Indiana Pacers Cheerleaders Do Halloween -- Slutty Lifeguard, Slutty Cat, Slutty Ref

The Indiana Pacers cheerleaders are ALL ABOUT Halloween ... and to prove it, they threw on an array of slutty costumes and showed off their incredibly hot bodies.

Among the highlights ... slutty cat, slutty Barbie, slutty luffa, slutty lifeguard, slutty cop ... you get the gist -- it's awesome.