Sideshow: Nun Nicki and the 'pope'

She did the red carpet as Little Red Riding Hood (in a blood-red Atelier Versace nun-inspired satin robe) with a pope-alike in full faux-Vatican regalia on her arm. Nicki Minaj at the Grammys. So scandalous! Minaj, 29, later performed "Roman Reloaded," with a stage show out of The Exorcist: She was strapped to a leather table, levitated, surrounded by roaring flames, and did a mock self-exorcism. The spectacle disgusted The View's Sherri Shepherd. "I didn't know whether to dance or pull out my Bible and lay hands on the tv," she tweeted.

Others yawned. "Miss Minaj, did someone not tell you Madonna did this mock-Catholic thing 20 years ago?" Fox News asked. "And that Gaga 'resurrected' [it] . . . two years ago?" Minaj tells Ryan Seacrest the pope figure is "a major part of the story and the movie that I'm writing about one of my alter egos . . . " She said the show felt good and "was the most comfortable I've been in my entire life."

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Now that Sarah Michelle Gellar has gone back to work - she plays identical twins in CW's Ringer - she can count on her hubby of 10 years, Freddie Prinze Jr., to keep their 2½-year-old daughter, Charlotte, content on the homefront. "When Charlotte was born, Freddie was on 24 and I didn't work for two years," Gellar says. "I had asked him, 'When I'm ready to go back to work, will you stay home with her then?' He was like, 'Fine!' " Adds Gellar: "He loves it. I think I've created a monster!"

  Catherine, the Duchess of Cambridge, is taking her professional role as royalty to the next level: She's being teamed up with Prince Charles' wife, Camilla, and the sovereign herself, Queen Elizabeth II, for a promo public event March 1 - a tea party at the luxe historic department store Fortnum & Mason. It's part of a royal push for a renovation of the surrounding Piccadilly Circus 'hood. Kate's hub, Prince William, is deployed in the Falkland Islands.

The Twilight Saga: Breaking Dawn - Part 1 is conquering the home entertainment market: It sold 3.2 mil. DVD and Blu-ray units during its first weekend of release, Lionsgate says. . . . Hilary Duff's hockey player hub, Mike Comrie, 31, has retired from the NHL. The couple are expecting their first baby. . . . Seems Kim Kardashian hasn't given up dating football players: TMZ claims she's mended fences with ex-beau Reggie Bush. . . . Playboy founder Hugh Hefner's son Marston Hefner was arrested Sunday night for allegedly attacking his girlfriend, Playmate of the Year Claire Sinclair, during a fight in their Pasadena, Calif., home. TMZ says Sinclair told cops her beau punched her, kicked her in the stomach, and refused to let her leave the house. Marston is out on $20,000 bail.