Talk about a birthday present.

Hills star Brody Jenner spent his 26th birthday in Los Angeles' Cedars-Sinai Medical Center having his appendix removed, a source tells

"This sucks," he posted on Twitter.

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The source says he checked into the hospital around 3 a.m. Friday morning with a ruptured appendix and was in surgery by 7 a.m.

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"He was surrounded by his mother, brother and manager," the source tells Us. Having them around "was his unexpected birthday gift," the source adds.

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Girlfriend Jayde Nicole was also there. "@jayde_Nicole and I sitting around at the hospital waiting for me to go under the knife :(" he Tweeted.