KayCee Stroh's Surprise 24th Birthday Party

KayCee Stroh's Surprise 24th Birthday Party
KayCee Stroh

05/31/2008 AT 03:00 PM EDT

It's been a big week for actress KayCee Stroh. The High School Musical star, who recently announced to PEOPLE exclusively that she is engaged, had something else to celebrate Thursday night: her 24th birthday.

In Utah shooting the third installment of the popular HSM franchise, Stroh was thrown a surprise party at the Classic Skating & Fun Center in Salt Lake City on a day off from filming.

Sporting her new engagement ring – "a princess cut solitaire diamond surrounded by pave set diamonds," she gushed to PEOPLE last week – the star was surrounded by friends and family, including fiancé Ben Higginson and costars Corbin Bleu, Ryne Sanborn, Bart Johnson and new cast members Justin Martin and Jemma McKenzie-Brown.

Stroh blew out the candles on custom-decorated ice cream cakes from Cold Stone Creamery, which was adorned with musical notes, sprinkles, and gerber daisies (her favorite). Her flavors of choice? Chocolate and chocolate chip.

Stroh plays pop-and-lock girl Martha Cox in the hit films, staring alongside Zac Efron, Vanessa Hudgens, Ashley Tisdale, Monique Coleman, Corbin Bleu and Lucas Grabeel. And her fiancé is the perfect fit in the mix. "They all love Ben," she recently raved. "He's like one of the gang."

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