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 — Hayden Panettiere 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.
Source: Getty / Vittorio Zunino Celotto 
In late May, Hayden Panettiere  and fiancé Wladimir Klitschko announced that they are expecting their first child .
Source: Getty / Andreas Rentz 
When Christina Ricci  arrived at LAX in May, she showed off a beautiful baby bump .
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 
Christina Aguilera  took to Twitter to share her baby news , writing, "So blissful in taking this time for creating all things blossoming new on the horizon...album, baby & beautiful music to come."
Jenna Fischer and her husband, Lee Kirk, announced in February  that they would be adding another member to their "little unit."
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.
Lil' Kim made headlines when she surprised everyone with her pregnancy announcement  in February.
Doutzen Kroes took to Instagram  to share the exciting news that she's pregnant with her second child. She and Sunnery James already have a son named Phyllon.
Just a few weeks after tying the knot with Brandon Blackstock, Kelly Clarkson  announced that she is pregnant with the couple's first child . She tweeted the news in November, saying, "I'm pregnant!!! Brandon and I are so excited! Best early Christmas present ever."
In November, Once Upon a Time stars Ginnifer Goodwin  and Josh Dallas confirmed that they are expecting a baby ! The couple fell in love on set and got engaged in late October of last year.
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!"
Savannah Guthrie surprised Today show television viewers by announcing she was married and pregnant  on March 17. The morning show anchor and her husband surprised guests at their wedding  with the pregnancy news, saying they had some breaking news to share.
Just days after announcing her surprise marriage to Jared Pobre , Stacy Keibler announced she was pregnant by Instagramming a photo of a bun in an oven .