Guess who got married in the back of a pink Cadillac at a Las Vegas chapel? Helen Mirren? No, though she's cool enough. Lindsay Lohan? Wrong-o, even if she does write in her diary in pink ink. Anyway, LiLo's too busy posing for Playboy covers.

The answer is - shaved-head singer and ex-lesbian Sinead O'Connor! On her 45th birthday Thursday, says Access Hollywood, O'Connor married therapist Barry Herridge, 38. It's her fourth and his, well, we don't really care how many times Barry has been married. The pair wed at the same Vegas chapel where Britney Spears and Frank Sinatra both had their knots tied (not to each other, of course).

Humphries cries foul

Poor pro b-baller and ex-hub Kris Humphries went on TV and talked about his mini-marriage to Kim Kardashian - but didn't want to talk about it much. He told Good Morning America on Friday that he's moving past his marital mishap and focusing on b-ball. (It's worth noting that the NBA lockout lasted 77 days longer than his marriage!) Now TMZ says Humphries felt "ambushed" on GMA and didn't expect to be, as TMZ puts it, "grilled like a cheeseburger" about the divorce.

WKDN changes hands

Radio-Info.com says Merlin Media is buying WKDN-FM (106.9) from Family Stations for $22.5 mil - and they've hired Philly native Al Gardner away from his Charlotte, N.C., radio station to program it. Al arrives in early 2012. No word on format - but it may well be all-news, to go up against KYW-AM (1060).

More reason to love Tilda

Michael Clayton Oscar-winner Tilda Swinton, 51, so prizes her privacy, says USAToday.com, that not a single promo photo exists of her two kids, 14-year-old twins Xavier and Honor.  Swinton is doing rounds for We Need to Talk About Kevin, in which she plays the mother of a serial killer  . She says winning the Oscar was a goofy fluke.

"It was completely random . . . my feeling about it was that I won a raffle," she says. But a useful one: Tilda says getting an Oscar gave her the mojo to get Kevin made.

- Tirdad Derakhshani

Tidbits 'n' pieces

  Writer Eric Ryder has sued Avatar director James Cameron, claiming the plot was stolen from a project Ryder worked on for two years for Cameron's production company before the project was axed. . . . That's not rain you're feeling outside; it's tears from 13-year-old Rachel Crow, getting eliminated from The X Factor to the dismay of fans and the heartbroken Crow herself. Sometimes, it just hurts to see children on reality TV.

This article contains information from Inquirer wire services. Contact "SideShow" at sideshow@phillynews.com.