If you thought 2014 was already packed with celebrity baby births — Gwen Stefani 's, Simon Cowell 's, and Megan Fox 's, to name a few — just wait until you see who's on tap to welcome new additions to their families. The next few months are already shaping up to be packed with new Hollywood additions. While there are several first-time moms eagerly awaiting their new arrivals — Carrie Underwood is the latest to join this list  — there are also plenty of seasoned parents anticipating their second and third children. Keep reading to see which celebrities will be adding to their families in 2014.
Zoe Saldana  and her husband, artist Marco Perego, are reportedly expecting their first baby! A source tells Us Weekly  that the Guardians of the Galaxy star is about "three months pregnant," but she is waiting to announce the news.
After a few days of speculation, People confirmed that Eva Mendes  and her boyfriend of three years, Ryan Gosling , are expecting their first child.
Kristen Bell  and Dax Shepard are expecting their second child. The couple, who are already parents to 1-year-old Lincoln Bell, tied the knot late last year, making for a busy two years for the family!
Kourtney Kardashian confirmed her third pregnancy  on an episode of Keeping Up With the Kardashians.
Lindsay Price 's husband, Curtis Stone, announced that the couple is expecting their second child while appearing on The Queen Latifah Show in May.
In late May, Hayden Panettiere  and fiancé Wladimir Klitschko announced that they are expecting their first child , a girl.
Source: Getty / Andreas Rentz 
LeeLee revealed her baby bump on the red carpet in NYC in May. She is expecting her second child with Adam Kimmel .
A couple since 2007, Rachel Bilson  and Hayden Christensen  announced that they are expecting their first child  this year.
Mila Kunis and Ashton Kutcher are expecting  their first child! The engaged couple began dating in 2012, four years after they costarred together on That '70s Show.
Lake Bell debuted her growing belly  at the Tribeca Film Festival in April.
Source: Getty / Jim Spellman 
Scarlett Johansson recently confirmed her pregnancy . She is expecting a baby with her fiancé, French journalist Romain Dauriac. The couple dated for about 10 months before getting engaged in August 2013.
Alyssa Milano  and her husband, David Bugliari, will make their 2-year-old son, Milo, a big brother this year . The couple announced that they are expecting their second child via a post on her personal blog  on March 21, saying, "We are so happy to share with you that Milo is going to be a big brother!"
Amanda Peet announced her baby news  — a third child on the way — at the Emmys when she showed off her baby bump on the red carpet.
After a day of tabloid rumors swirling around her, Shakira announced that she and her soccer star fiancé, Gerard Piqué, are expecting their second child . The new baby will join their 1-year-old son, Milan Piqué Mebarak.
Carrie Underwood used her Twitter account to announce her pregnancy  news on Labor Day. She tweeted a picture of her two dogs wearing "big brother" and "big sister" shirts, saying, "In honor of 'Labor' Day...Ace & Penny would like to make an announcement. Their parents couldn't be happier!" She is expecting her first child with her husband, Mike Fisher.