Kevin Federline’s pals claim that a private investigator hired by Kevin has proof of an almost instant relapse.

“Just days out of rehab, Britney was spotted at the Bridge Restaurant & Lounge eating steak and drinking red wine,�? said the source.

“Britney enjoyed the sake so much at a Japanese restaurant she ate there three nights in a row, drinking and laughing through each meal.�?

Then she was spotted at Teddy’s, a trendy Hollywood lounge, as well as at the nightclubs Les Deux and Joseph’s – where on June 11 she failed to notice that the shoulder of her green satin dress slipped, exposing her breast.

Kevin’s pals say he knows through his investigator that Britney has a companion who’s going on liquor runs for her- and that the singer has stumbled drunk out of a number of clubs in the past.

Kevin’s pals also say he plans to bring up that Britney allegedly walks around her house topless or naked and doesn’t care who notices.

Britney needs help with her mothering skills

“Kevin says Britney doesn’t even know how to put the boys in their car seats properly,�? claims the source. “She feeds them junk food, curses like a sailor, and chain-smokes around them.�?