We'd love to know the location of Hayden Panettiere's new tat. A source at the Lollapalooza music fest in Chicago tells us that the popchips lounge there was closed to all other VIPs for three hours Sunday so Panettiere could get a new tattoo from the ink artist in residence. No word on what design the wild child chose, but Panettiere was overheard saying she was celebrating her birthday "a little early." (She turns 21 on Aug. 21.) She already has a Leo symbol on her ankle (which reportedly made her mother, Lesley, cry when she saw it). And "Viviere Senza Rimpianti" - Italian for "Live Without Regrets" - is misspelled on the left side of her back. Perhaps she was seeking to correct the error. If not, let's hope this artist could spell.
Panettiere's rep didn't return our calls by deadline.

"Twilight" pretty boy Kellan Lutz popped Samuel L. Jackson in the face - and lived to tell about it. Lutz played host at the Borgata Hotel's Sunbar in Atlantic City on Sunday. While Beyoncé's sister, Solange Knowles, deejayed, the congenial heartthrob told us that when he filmed a fight scene with Jackson for "The Killing Game," "I busted his lip up a bit. He took it like a champ," Lutz added. "I mean, of all the guys to hit like that ... he was really cool about it."

Lutz, who is dating actress AnnaLynne McCord, was pretty cool, too, when during the interview a male admirer sauntered by and told the actor/Calvin Klein model, "You're so hot." Replied Lutz: "Oh my God, so are you." Then, turning to us, he added: "Look at that ass. He must work out!"