The singer celebrated her entry into the thirties by skating with her boyfriend.
Currently on her South American tour, Brit took a break and returned to the northern continent for some ice-skating in Houston with her beau.
In them meantime, Twitter and other social networking sites went abuzz with well wishes from Spears’ celebrity friends.
Britney’s sister Jamie Lynn Spears sent her a message on Twitter, “Happy Birthday @britneyspears !!! Me and maddie love and miss ya very much!!”
“Sendin b-day love to @britneyspears cheers to another great year!!!” Miley Cyrus tweeted before adding, “Let’s make @britneyspears day & show some love! Let’s trend #HappyBdayBritney.”
“Happy birthday to the beautiful Miss Britney Spears! Welcome to the 30′s club, Brit!!” Kim Kardashian told the singer on Celebuzz. “I wish you all the best for this next year and beyond. You’re going to love your 30′s! I love you and hope you have a magical day.”
Justin Bieber also took to Twitter to congratulate her, “Happy birthday shoutout to my friend @britneyspears.”
In true Ellen DeGeneres style, the talk show host sent her well wishes to Britney, saying, “I can’t believe Britney is turning thritney. I mean thirty. Happy birthday @BritneySpears!”
“7 years and so many frosted tips later, we’re both finally 30!” Ryan Seacrest wrote, posting an old photo of himself with Spears. Brit’s reply: “Next step for you are extensions!”
“Thank you girl. Max is so cute! Miss you. Xxoo,” the singer responded to Christina Aguilera.
Britney will offer a free show in Mexico City on Sunday before closing her Femme Fatale world tour next weekend.