Lauren Conrad and The Hills costars Audrina Patridge and Whitney Port hit up the special MTV taping of Legally Blonde: The Musical at NYC’s Palace Theater on Thursday. Watch the trio introduce the show from their seats!

Pictured at the pink carpet event: MTV VJ Damien Fahey, singer Kat DeLuna, ANTM’s CariDee English and Kim Stolz and Laura Bell Bundy, who plays the lead role of Elle Woods, for which she received her first Tony Award nomination for Best Leading Actress in a Musical.

Lauren wore a Mint by Jodi Arnold dress and Max Studio shoes. Audrina’s dress is from Mary-Kate and Ashley Olsen’s contemporary sportswear line Elizabeth and James. Whitney wore a hot pink Catherine Malandrino bubble dress. All three decked out in jewelry by Elyse Jeanne, Allison Daniel, Melanie Auld and Hayluv.

Broadway’s perkier-than-thou musical smash, Legally Blonde, will premiere on MTV on Saturday, Sept. 29.

30+ pictures inside of the Legally Blonde MTV special… More Here! »

Rising pop star Kat DeLuna works the TRL wall like nobody’s business on Thursday’s TRL (taped Tuesday).

The 19-year-old bilingual sensation was born in the Bronx but raised in the Dominica Republic. She currently hails from Hoboken, New Jersey and is said to have a 5 octave vocal range, comparable to Mariah Carey.

Kat even has opera training and gave a little sample during TRL. She also performed her hit single “Whine Up.” Kat’s debut album, 9 Lives is set for a August 7 release.