Kate Middleton in Labor: Celebs React to Royal Baby Mania

Nicole "Snooki" Polizzi, Chrissy Teigen, and Kelly Osbourne
After the Palace announced that Kate Middleton had gone into labor at St. Mary's Hospital, celebs including Kelly Osbourne, Snooki, and Chrissy Teigen flocked to Twitter to express their excitement over royal baby mania. Cindy Ord/Getty; David Becker/WireImage.com; Frazer Harrison/Getty

The moment is finally here! After months of anticipation, Kate Middleton went into labor on Monday, July 22, sending royal baby mania into overdrive on Twitter.

Minutes after the Palace announced in a statement that the pregnant Duchess of Cambridge, 31, had checked into the Lindo Wing at St. Mary's Hospital in London, the microblogging site exploded with #KateMiddleton and #RoyalBaby tweets from all over the world. Among those who chimed in to voice their excitement were celebs including Snooki, Kelly Osbourne, Chrissy Teigen, and Piers Morgan. Us Weekly rounded up some of their reactions below:

Snooki: Push girl, pushhhhhh! #KateMiddleton #RoyalBaby #excited

Kelly Osbourne: It's all so exciting. The Royal Baby is on the way!

Chrissy Teigen: 'I don't even care.' Me, on the royal baby, as I furiously scroll Twitter for updates.

Piers Morgan: Keep Calm…and Carry On. #Kate #Labour

Sarah Hyland: #BABYWATCH UPDATE! Kate Middleton has gone into labor! A royal baby is being born! I repeat! A #ROYALBABY is being born!!

(Hyland, who is currently in the U.K. filming a movie, also tweeted: "Hey Kate, it'd be great if u could pop out that #royalbaby in the next 7 hrs or so, so I could say I was here when the baby was born? Kthanksbye.")

Cat Deeley: Exciting, #RoyalBaby on the way. xxxx

Melanie Brown: Whoop whoop, the royal baby is coming.

Mark Hoppus: Yes, I know about the imminent arrival of the royal baby. IT WAS MY IDEA!!

Rashida Jones: Today may be a good day to announce my new EDM DJ name: Royal Baby Labour.

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