Already getting knocked around

Knox Leon’s first report card wasn’t great. Or maybe it’s just that his twin sister, Vivienne Marcheline, ruined the curve.

The Associated Press asked a few baby-name experts to grade the names that Angelina Jolie and Brad Pitt gave their new arrivals:

•Whitney Walker (“The Perfect Baby Name,” ThePerfectBabyName.com): Knox, B-minus; Vivienne, B-plus. “I’m sure she’s going to call them Knox and Viv, and the ‘V’ and the ‘X’ kind of tie them together. … She’s going to say these names together a lot; you want them to sound good together, and not be too disjointed.”

•Jennifer Moss (“The One-in-a-Million Baby Name Book,” Babynames.com): Knox, B; Vivienne, A. “I think Vivienne Marcheline is a very feminine, very beautiful name. … I think it’ll bring popularity to French names.”

•Maryanna Korwitts (“Name Power 101,” BabyNamingCentral.com.): Knox, D-plus; Vivienne, C. “(Knox) makes you think of ‘hard knocks,’ or knocking someone on the side of the head. We also have Fort Knox. That is something I would steer clear of – you want to think ahead of what kids will face in school.”

But will Honor cherish it?

One reason Jessica Alba named her baby daughter Honor was that she felt her own name was pretty bland.

“I was always irritated that my name was Jessica,” the 27-year-old actress tells OK! magazine. “Come on, it’s a very ’80s name, because there were tons of Jessicas in every school I went to.

“There’s something great about having a unique name. It’s a part of your identity.”

Getting back on her feet

Britney Spears and ex-husband Kevin Federline have reached an agreement that grants the pop singer two overnight visits, not just one, each week with their two young sons.

Spears, trying to rebound from a series of personal crises, also is back in the studio working on a new album, which producers call “really dance-y, really up-tempo.”

Just an old flame

50 Cent is free to take a vacation with his son after passing a court-ordered drug test.

Eleven-year-old Marquise lives with his mother, former Fiddy girlfriend Shaniqua Tompkins, who blames the rapper for a suspicious fire that destroyed the Long Island mansion where she and the boy were living. He has denied the accusation.

Lewd and clear

At age 47, Julianne Moore refuses to cut down on racy movie roles to spare her childrens’ feelings.

“I’m aware that my kids will one day see my films and might think they are a bit (embarrassing), especially the nude scenes,” says Moore, whose latest, “Savage Grace”, features a three-way.

“But, hey, there’s always a point in a kid’s life when they hate their mother.”

The birthday bunch

Country singer George Hamilton IV is 71. Singer Vikki Carr is 67. Guitarist Brian May (Queen) is 61. Guitarist Bernie Leadon (The Eagles) is 61. Filmmaker Atom Egoyan is 48. Actor Campbell Scott is 47. Actor Anthony Edwards is 46. Actress Nancy Walls is 42. Actor Jared Padalecki is 26.