There must be something in the water.

Yet another celebrity is with child, this time it’s Tisha Campbell-Martin, who is two months pregnant with her second child.

“She just found out and is so excited!” Tichina Arnold, Tisha’s best friend and former Martin co-star, tells Us Weekly.

Tisha, 40, and husband Duane Martin are already parents to son Xen, 8 ½. The couple — who have been married for 12 years — are hoping for a girl, Tichina shares.

“She hopes to have a girl this time, and has said she would love to name her Derek. She has been wanting a girl for almost six years. Everybody is so excited!”

Congrats Tisha and Duane!

No doubt about it, Kimora Lee Simmons and boyfriend Djimon Hounsou are soon to have a new kid on the block. Here, the two celebrate at the Los Angeles premiere of his new film, “Push,” on Thursday night.

OK, so folks have been batting back and forth if Kimora Lee Simmons is preggers with a kid by boyfriend, actor Djimon Hounsou for more than a year now. Again, sources close to the model and businesswoman are telling Us Weekly that she’s with child. And these photos do much to back that up.

Rumors circulated last week that singer and actress Mya was pregnant and was penning a tell-all book, ala Superhead.

Not so, she fires back on her myspace page.

“When I signed up for the entertainment biz, I realized there would be a list of pros & cons. On the positive side – pursuing my passion, touching lives, seeing the world through travel & providing for my family. On the negative side – criticism, disappointments, lies, lack of privacy, sabotage, politics, corporate slavery, litigations and never ending false rumors,” she writes. “… to answer all of the inquiries & questions about the latest rumors that have been circulating, no… there is not & never was a “Superhead tell all” book or sextape. No, I did not show up to a club in Barbados in which I was falsely advertised. I was there for a charitable speaking engagement for children. No, I am not dating any entertainers, athletes, congressmen, married men or billionaire’s son. No, I am not pregnant, engaged or married. Though children are beautiful, I aint on that page.”

Child star Jaimee Foxworth, whose addictions landed her a spot on Celebrity Rehab with Dr. Drew, is five months pregnant by her longtime boyfriend, People magazine reports.

“I haven’t been this happy in years,” says Foxworth, 29. “I am excited about what the future holds for us.”

She plans on releasing an autobiography in mid-2009 and is working on a hip-hop album and a reality show, but is better known for a troubled life. After being unceremoniously written off as the youngest child on the sitcom Family Matters, she lost all the money she made on the show, then turned to adult films and acquired a marijuana addiction.

“Being sober has opened my eyes to a whole new world,” she says. “I’ve been through a lot of pain in the past and I never really wanted a child until recently. I now look forward to years of joy to share with my child.”

Unless she’s smugglin’ a heap of paper planes under that shirt, British singer M.I.A. is pregnant. While the talented performer hasn’t officially come out and said so, this shot from a performance a few days ago at the Diesel party with T.I. (”Swagger Like Us”) proves as much. We guess that probably explains why the summer tour to promote her album Kala was abruptly halted. Congrats go out to her and her fiance Benjamin Brewer.