Taylor Swift Surprises, Demi Lovato Thanks 'My Love' Wilmer Valderrama at GLAAD Awards

Taylor Swift was a surprise presenter at the 27th Annual GLAAD Media Awards at the Beverly Hilton Hotel in L.A. Saturday night, where she presented actress Ruby Rose with the Stephen F. Kolzak Award.

Introduced by Ross Mathews, willowy Swift emerged in a clingy, midnight-blue gown with a thigh-high slit to show off her legs.

Calling Ruby "someone, who through her words and through her actions, proves that she is a force of nature," Taylor said the "Orange Is the New Black" star "tells the world that no one can judge us and no one can stop us. She is a woman of many talents. She is my friend, Ruby Rose."

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The advocacy group also honored Demi Lovato with a Vanguard Award for making "a significant difference in promoting equality and acceptance."

Demi was given her award by "Camp Rock" co-star Nick Jonas, with whom she will be touring all summer.

In her raunchy speech, Demi said, "I know that you all love Nick Jonas," but went on to joke that she is more endowed than Nick, and has "a huge set of b*lls." She ended her speech by thanking "my love that can't be here tonight. His name is Wilmer Valderrama, and I am so proud to be his girlfriend."

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Caitlyn Jenner also surprised at the awards show, taking the stage to emotionally thank her co-stars after her reality series "I Am Cait" tied with "I Am Jazz" for Outstanding Reality Program.

Watch the video of Caitlyn choking up!