Katy Perry Wears Her Heart On Her T-shirt

Cheeky Perry says her Russell brand of love is "the real s***"

Katy Perry and Russell Brand celebrated Katy's 25th birthday over the weekend and if that and our report on last week's trip to a sex shop weren't proof that they're an item, then the explicit t-shirt Katy's been wearing is.

Katy and Russell stepped out for smoothies and gasoline on Monday with Russell in a shirtless vest and jeans and Katy wearing a t-shirt reading, "The real s***, S*** to make you feel s***." The words come from the Mobb Deep song "Quiet Storm" featuring Lil Kim, which is more about gangs and guns than love. The t-shirt, however, is raising eyebrows about Katy's security with the press' perception of her romance.

Apparently Katy and Russell are getting serious and despite the fact they've been dating just over a month, they're talking about moving in together. It's reported their budget is $7,500 for a month's rent, and they're trying to move in to The Summit gated development where Britney Spears lives so they can, as one source says, "make a bunch of noise."

They already are.