Apparently, 2013 is the year for big surprises and by big it means big baby bumps. Expectant celebrities are keeping fans on their toes for the big reveal. Before that day comes, here's a look at the pregnant celebrities rocking their baby bumps.

Last year, Beyoncé's baby bump was one of the most famous pregnancies. However, this year Kate Middleton's baby bump rules the charts given she's carrying the next line to the throne. Other pregnant celebrities this year include "Glee's" Heather Morris, Fergie, Jessica Simpson and Jenna Dewan-Tatum.

In an interview with the "Glee" star, Heather Morris stated that she's "incredibly happy and excited" with the pregnancy. The star was spotted rocking the baby bump last week when she walked her pit bull after a round of jogging.

"Keeping Up with the Kardashians" star, Kim Kardashian is also pregnant with her first child with Kanye West. Both stars are seriously considering naming the kid, North West but that is just a rumour for now. For one, Kim loves to flaunt the baby bump on her social networking sites, Twitter and Instagram. Family, friends and fans are excitedly waiting for the birth of this fame-hungry baby.

Other expectant moms on their second baby bump include the lovely Halle Berry and the feisty Penelope Cruz. Berry is three months pregnant with her first baby boy from fiancé Olivier Martinez. The actresses' first child, Nahla, was from her previous relationship with Gabriel Aubry.

Check out the slideshow to see these momma's rock their baby bellies.

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