What’s new in the Hollywood baby world? Find out who’s pregnant, which Backstreet Boy is back on diaper duty, and what Jessica Simpson wants to name Baby #2.

Mario Lopez is going to be a dad – again! The X Factor USA host and his wife Courtney Mazza announced that they’re expecting their second child. The baby will join big sister Gia Francesca, 2, who appeared at the couple’s surprise baby shower holding a sign reading “I’m gonna be a big sister.” (via PEOPLE)

Kim Kardashian opened up about why she just has to wear super tight clothes, even while she’s pregnant. “I think because I have big boobs it could make me look heavier if I don’t, like, show off my waist or something,” the reality star said in the new issue of Du Jour magazine. “So I just have kind of learned to dress one way only.” Kardashian is expecting her first child with her boyfriend, rapper Kanye West.

Jessica Simpson revealed what she wants to name her second baby with fiance Eric Johnson. ” “[She’s] told people she’s going to name the baby Ace!” the source told Us Weekly. No word whether her choice is a sure thing, but the 32-year-old singer has a history of creative baby name picks. The couple decided on 10-month-old daughter Maxwell Drew’s unique moniker as a tribute to their respective families. Maxwell is Johnson’s middle name as well as his grandmother’s surname, and Drew is Simpson’s mother Tina’s maiden name. (via Us Weekly)

Backstreet Boy Howie Dorough welcomed his second son with wife Leigh on Saturday, February 16. The baby’s name: Holden John. “Holden is healthy and we couldn’t be happier,” the 39-year-old former boy band member told reporters. “Leigh is such an incredible woman and mother, and our son [James Hoke, 3½] is so excited to have a baby brother,” he continued. “I feel so lucky to have such an amazing family.” (via PEOPLE)