Following her overwhelmingly well-received performance of singles “Womanizer” and “Circus” on Good Morning America today, Britney Spears joined hosts Diane Sawyer and Robin Roberts to watch pre-taped birthday messages for the pop star from Sexiest Man Alive Hugh Jackman, Four Christmases star Resse Witherspoon and Fearless crooner Taylor Swift.

Jackman sang “Happy Birthday To You” to Brit in the clip and added, “Wishing you all the best.” This prompted Spears to exclaim, “Oh, my God! That’s awesome! Thank you!”

Witherspoon came on next, saying, “Happy 27th! You look great, and I hope you have a great day.”

Taylor Swift let her fandom for Spears take over, gushing, “I absolutely love you, and I’m so excited about the new album! What I’ve heard has been amazing. You have officially been awesome for 27 years!”

Check it out below:

Also, don’t forget to enter Buzznet’s Britney Spears Circus contest, where you can win the singer’s entire discography on CD and DVD, plus your very own carnival-style popcorn maker!

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