Someone who thinks they are the best lookin thang and can wear anything and still look hot...usually a ho. They believe can get anything and anyone they want, usually a man.
"he might think he all that, but he not!"
"Zaheen got a complete makeover cuz her friend Kevin let her know bout reality that she ain't all that even though she think otherwise"
"I'm all that and a bag of chips, plus dip...and fuckin' coke"
"ya'll must think I'm all that cuz you sayin' it you see what I'm sayin'?"
"I may be fat, but honey I'm all that"