‘SideShow': Jennifer Lopez, Steven Tyler bail out of ‘American Idol'; Matt Lauer's secret abs

Jennifer Lopez, have you no shame?! Steven Tyler, have you, um, no shame either?

Having used American Idol to resurrect their careers, the pair have dumped the Fox talent show. With Simon Cowell long gone, does Idol have long to live?

J-Lo, who was in Philly on Thursday, reportedly made $12 mil for her Idol-atrous service. She announced her treachery by phoning in to stalwart Idol host Ryan Seacrest's radio show Friday.

"I really was dreading this phone call with you," she told him. "I honestly feel like the time has come that I have to get back to doing the other things that I do that I've put kind of on hold because I love Idol so much."

Tyler skipped out Thursday. "I strayed from my first love, Aerosmith, and I'm back," he said.

Who'll fill their shoes? Mariah Carey and Idol runner-up Adam Lambert are in the running.

In more Jennifer Lopez news, the Idol alum tells TV show Extra that rumors she's engaged to marry beau Casper Smart are "not true."

Boss and Cheers boss Kelsey Grammer, 57, and his youthful bride, Kayte, 31, had their first baby Friday, Faith Evangeline Elisa, USA Today says. The baby's fraternal twin, a boy, died in utero. Grammer has three ex-wives, four other kids, and a grandson.

Today cohost Matt Lauer leads Men's Health mag's Secret Celebrity Six-Packs list. (Tighter abs never seen.) He's followed by Matthew Morrison (No. 2) and Jenna Fischer (No. 3). ... Green Mile actor Michael Clarke Duncan, 54, was hospitalized Friday after a heart attack, TMZ says. ... Will Twilight's Kristen Stewart and Robert Pattinson ever work together again? "Oh, dude, we will work together again," K-Stew tells Extra.