Happy 30th Birthday, Britney Spears!

Happy 30th Birthday Britney Spears

Happy birthday, Britney Spears!

The pop superstar celebrates her 30th b-day on Friday (December 2), and in addition to counting down her most iconic clips during the fan-voted Britney Spears Tournament: 30 Videos for 30 Years , MTV News also got some celebrity pals and Brit's most famous fans to wish the princess of pop a very happy birthday.

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'Yo, Britney, happy birthday!' Cobra Starship frontman Gabe Saporta said. 'You're still a babe at 30!'

Jason Derülo noted the singer's influence on pop culture. 'Happy birthday, Britney!' he said. 'Loved watching you growing up. You made a difference in music, and you made a difference in my life.'

Wilmer Valderrama mirrored Derülo's comments about Spears' unwavering pop-star status. 'If there's someone that influenced a generation in every aspect of the word, I'd say it's Britney Spears,' he said. 'Happy birthday, sweetheart!'

'Happy birthday, Britney!' Kris Allen said. 'Happy 30th! That's awesome!'

Heidi Klum recalled one of Spears' most memorable opening lines: 'Happy birthday! It's Britney, bitch, always!'

Britney's legacy includes hits like 'Toxic,' 'I'm a Slave 4 U,' ' ... Baby One More Time' and 'Till The World Ends' — to name just a few — and 13-year-old 'Modern Family' star Ariel Winter has been there all along. 'Happy birthday, Britney! I love your music. I've been a fan forever. You're amazing.'

Nick Cannon joked, 'Britney, you're 30, girl. I see. You get your grown woman on!'

'Jersey Shore' star Ronnie had this message: 'What's up, Britney? God bless you. You're doing great. Happy 30th birthday!'

'Shore' co-star and sometimes Femme Fatale tourmate Pauly D had this Twitter message for Brit: 'Happy Birthday To My Girl @britneyspears !!!' he wrote. 'I Luv Birthdays !!!'

But the Twitter love didn't end there: Justin Bieber RSVP'd to the Britney birthday party with this tweet : 'Happy birthday shoutout to my friend @britneyspears.'

'Sendin b-day love to @britneyspears :) cheers to another great year!!!' Miley Cyrus tweeted . 'Let's make @britneyspears day & show some love! Let's trend #HappyBdayBritney.'

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Ellen DeGeneres had a funny tweet for Spears on her birthday: 'I can't believe Britney is turning thritney. I mean thirty. Happy birthday @BritneySpears!'

Share your birthday wishes for Britney in the comments below! .