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Due date: Alanis and her husband welcomed a baby boy, Ever Imre Morisette-Treadway, on December 25.
Best known for: Her successful pop-rock career, including the classic 1995 album Jagged Little Pill, which is still the best-selling female debut album in the U.S.
Baby's daddy: Mario "MC Souleye" Treadway, a rapper who she wed in a secret May 22, 2010 ceremony.
Memorable maternity moment: Alanis' baby came as a (happy!) surprise - "I had just sort of said in passing [to my doctor] that I was a little late... and he said, 'Let's take a quick look,' " Alanis told Chelsea Handler on E!'S Chelsea Lately. The rest? History.
Due date: Ali and her husband welcomed a baby boy, Theodore Hayes MacArthur, on December 20.
Best known for: Modeling work that blossomed into a career in acting, including the dual roles of Niki Sanders and Tracy Strauss on Heroes.
Baby's daddy: Actor Hayes MacArthur, who she's been married to since 2009.
Memorable maternity moment: Ali intended to keep the baby's gender a secret, but she let the surprise slip during a visit on the Late Night with Jimmy Fallon show. He asked her to choose between a pink or blue onesie, and she responded by picking the blue onesie and announcing, "I have a little penis inside of me!"
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Due date: Amy and her husband welcomed a baby girl, Aviana Olea Le Gallo, on May 15.
Best known for: Being a judge on the reality show Project Runway, as well as her career in fashion journalism.
Baby's daddy: David Conrad, with whom Nina had a first son, Lucas Alexander Conrad, in 2007.
Memorable maternity moment: Nina's weird pregnancy craving? Watermelon. "I've been eating... lots of fruits and vegetables but mainly watermelon," she told People magazine. "It tastes better than ever so I've been indulging in that."
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Due date:Amy and her husband welcomed a baby girl, Aviana Olea Le Gallo, on May 15.
Best known for: Playing the lovable lead in hits such as Julie & Julia and Enchanted. She also held a recurring role as Jim's girlfriend on The Office and can be seen in the new film Leap Year, out in January 2010.
Baby's daddy: Fiancé Darren Le Gallo is also an actor. The couple began dating in acting class in 2001. They were engaged in July 2008.
Memorable maternity moment: Amy told Entertainment Tonight that she is far too impatient by nature to wait until the delivery room to learn the sex of her new baby. She says she intends to find out before -- and maybe she'll share the news!
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Due date: Claudia and her husband welcomed a baby girl, Cosima Violet, on May 14.
Best known for: Her beauty and charisma -- Claudia is a world-famous supermodel, and she has recently held small roles in film and television including the movie Love Actually and the hit TV series Dharma & Greg.
Baby's daddy: Claudia's husband Matthew Vaughn is a film producer and director. The couple has two children together -- Clementine, born in 2004, and Caspar, born in 2003.
Memorable maternity moment: Claudia is not one to skimp on food during her pregnancies. While pregnant with her second child, Claudia told the Mirror that her current obsession was doughnuts and non-alcoholic beer. ?I'm eating whatever I want at the moment,? she told the paper. ?Isn't that marvelous??
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Due date: Tiffani and her husband welcomed a baby girl, Harper Renn Smith, on June 15.
Best known for: Her starring roles in teen television in the 1990s including Saved By The Bell and Beverly Hills 90210. Now, she's on the cast of the drama White Collar.
Baby's daddy: Tiffani and her actor husband Brady Smith, who married in 2005, have shot down pregnancy rumors several times in the past few years.
Memorable maternity moment: Tiffani and Brady have said they definitely won't follow the celebrity trend of "crazy" baby names. Though they haven't settled on a name for baby-to-be, Tiffani said they have a few favorites. "You're not going to find any freaky names," she says. "I promise."
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Due date: Amy and her husband welcomed a baby boy, Abel James Arnett, on August 6.
Best known for: Her many roles on Saturday Night Live and her current TV hit, Parks and Recreation.
Baby's daddy: Husband Will Arnett is best known for his starring role in the hit TV series Arrested Development.
Memorable maternity moment: Amy and husband Will take parenting their son Archie, 1, very seriously, and they are excited to add another child to their family. "[Being a parent is] just the best," Will told People recently. "Because it's a human being you're responsible for ... that's scary, but even in its scariest moments it's fantastic."
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Due date: Isla and her husband welcomed their new addition in the summer of 2010.
Best known for: Her funny roles in films such as Confessions of a Shopaholic, Definitely, Maybe, Wedding Crashers, and Scooby-Doo.
Baby's daddy: Husband Sascha Baron Cohen, also known as Borat, Ali G, and most recently Bruno, is an actor/comedian. The couple married in March 2010 and have one daughter, Olive, 2.
Memorable maternity moment: Isla kept her second pregnancy a secret for quite some time! It wasn't until April 2010, when she was sporting a rather large baby bump, that it was obvious a little one was on the way. Isla and her husband still have not commented on the pregnancy.
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Due date: Kaitlin and her husband welcomed a baby boy, Axel Lee, on September. 1.
Best known for: Her role as mouthy Dee Reynolds on the FX hit It's Always Sunny in Philadelphia. She also played the best friend of Amy Adams in the 2010 romantic comedy Leap Year.
Baby's daddy: Husband Rob McElhenney is Kaitlin's co-star on It's Always Sunny in Philadelphia. He also created and co-produces the hit show, which will return for it's sixth season this fall. The couple was married in September 2008.
Memorable maternity moment: Kaitlin says she and husband Rob are beside themselves with happiness over her pregnancy. ?Rob and I are so excited it's stupid,? she said in a statement. ?The last couple years have been pretty amazing for us and just when we thought things couldn't get any better, the greatest little thing in the world happened!?
Due date: Bethenny and her husband welcomed a baby boy, Bryn Casey Hoppy, on May 8.
Best known for: Her role on The Real Housewives of New York City. Since the New York series of the hit reality show began in 2008, Bethenny was the only Housewife to not fit the title role of wife until March 2010.
Baby's daddy: Husband Jason Hoppy. The couple were engaged about one month into Bethenny's pregnancy, and were married in March 2010 in New York.
Memorable maternity moment: Bethenny told People magazine that she has been experiencing very strong pregnancy cravings. ?I'm hungry in a way that is not negotiable,? she said. ?I'm not eating [a] tremendous amount, but if I am hungry, I will stab someone for food.?
Due date: Amanda and her husband welcomed baby girl Molly June on April 19.
Best known for: Her starring roles in hit films including The Whole Nine Yards, A Lot Like Love, and this year's 2012.
Baby's daddy: Peet and screenwriter husband David Benioff have one daughter named Frances Pen, 2.
Memorable maternity moment: After the birth of daughter Frances, Amanda said she and Benioff wanted more children, but couldn't agree on how many. "He wants three, but I'm old, I'm an old lady," Peet told People. "Two is enough."
Due date: Rebecca and her husband welcomed baby girl Billie Beatrice on March 3.
Best known for: Her supporting roles in Beverly Hills 90210, Nip/Tuck, and Ugly Betty.
Baby's daddy: Husband Eric Dane is best known for playing the womanizing Dr. Mark Sloan on Grey's Anatomy.
Due date: Jenna welcomed a baby boy, Easton Quinn Monroe Elfman, on March 2.
Best known for: Her starring role in the show Accidentally On Purpose as well as past hit sitcom Dharma & Greg.
Baby's daddy: Husband Bodhi Elfman and Jenna have one 2-year-old son, Story Elias Elfman.
Memorable maternity moment: After going through maternity clothes once already, Jenna says she's trying to stay in her regular duds for as long as possible. She recently attended a Hollywood event in a skin-tight black dress -- non-maternity -- that showed off her growing belly.
Due date: Padma welcomed a baby girl, Krishna Thea Lakshmi, on February 20.
Best known for: Hosting the hit reality show Top Chef. Padma is also a model and author of the popular cookbook Easy Exotic: Low-Fat Recipes From Around the World.
Memorable maternity moment: Padma's pregnancy has been called a "medical miracle" because she suffers from endometriosis, a condition that often causes infertility. Since her diagnosis, Padma has founded the Endometriosis Foundation of America.
Copyright © 2010 Meredith Corporation.