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Royal Baby, Kate Middleton, Catherine, Duchess of Cambridge, Prince William

AP Photo/Kirsty Wigglesworth

After the great Kate wait, we finally got our first look at the royal baby, the Prince of Cambridge! 

And no surprise—the little one is even more adorable than expected.

Kate Middleton and Prince William debuted their son on the steps of St. Mary's London hospital at 7:14 p.m. local time Tuesday before heading to their home at Kensington Palace.

Moments after the big reveal, stars began sounding off on social media with well wishes for the proud parents and thoughts on the future heir to the throne. Here's what the celebs are saying:

Harry Styles: "Congratulations to Will and Kate on the birth of their baby. A king is born."

Elizabeth Banks: "Honestly, I am more impressed with Kate's blow-out than the #RoyalBaby which looks just like a human baby. But that hair!

Busy Philipps: I can't imagine basically doing a press conference 20 hours after giving birth. I also can't imagine giving birth to a future king so...

Giuliana Rancic: "Couldn't help but tear up"

Khloé Kardashian Odom: "How phenomenal is this picture! Awww #PolkaDotPerfection #RoyalBaby," the E! star captioned a pic-framed Instagram photo of Kate Middleton and Princess Diana

Ryan Seacrest: "I couldn't stop smiling #royalbaby"

Lily Allen: "He looks like a George to me."