Oksana Grigorieva has already dropped her baby weight -- just about a month after welcoming Lucia with beau Mel Gibson.
When asked by "Extra's" Mario Lopez how she got slim, Grigorieva says, "I don't know. Just being an active mother, I guess. It just snapped right back in."
How's Gibson as a father?
"He's a great dad," Grigorieva says. "He sings a lot to her."
Grigorieva spoke to "Extra" the same day her single "Angel" -- from her album "Beautiful Heartache" -- was released on iTunes.
She plans to donate the money from the downloads to a charity close to her heart, Chernobyl Children's Project International. Learn more about the charity here.
Hugh Dillon has branched away from his hit band, The Headstones, to make music on his own -- and Dillon, 46, just dropped the music video for his single, "Ten Feet Tall," from his solo album.
The singer's talents don't stop onstage -- Dillon has dabbled in acting, and has created original musical pieces for projects he's worked on, including "Durham County" and "Flashpoint."
Dillon's album, "Works Well With Others," is currently available on iTunes.
Nick Jonas is going solo!
The Jonas Bro, 17, has started his own band, his mom confirms to Parade.com.
"Nick is working on a solo act -- it's called Nick Jonas and The Administration. Shhh!" Says his mother, Denise Jonas. "He's at the photo shoot for the album cover right now."
Denise also reveals that her son Kevin Jonas, 21, has set a wedding date with fiancée Danielle Deleasa.
"Kevin and his fiancée Danielle have set their wedding date -- but it's completely private," Denise teases.
She's a fan of Deleasa, to whom her son became engaged to in July.
"Danielle, bless her heart, is from a great little Italian family. She is everything I ever prayed for and hoped for Kevin," she said.
Fans have always wondered whom Carly Simon was thinking about when she penned her 1973 hit "You're So Vain." Tell "Extra" who you think Simon was singing about!
Carly's new album, "Never Been Gone," hits stores Tuesday.
After British tabloids claimed La Roux singer Elly Jackson slammed Lady Gaga, Jackson came to "Extra" and told us she doesn't have a problem with the edgy pop star!
Jackson says she actually admires Gaga. "I think she's amazing. I mean, look at her wardrobe, how could you not find that amazing?"
"I don't have her album, it's not my kind of music really," the 21-year-old added. "But I don't think there is anything wrong with that."
Jackson says she met Lady Gaga, whose real name is Stefani Germanotta. The eccentric singers met for breakfast -- and don't have any beef. Jackson concluded, "I have no bones about Lady Gaga."
Check out our gallery of Lady Gaga's wildest outfits!