Tony winner Kristin Chenoweth, La Fea Más Bella star Angélica Vale and Gina Gershon will all guest star on the season finale of ABC' s award-winning comedy, Ugly Betty, THURSDAY, MAY 17, (8:00-9:00 p.m., ET) on the ABC Television Network.

In the episode, "East Side Story," Chenoweth will play Diane, an orthodontic technician who loves romantic comedies and becomes overly involved in her patients' lives - include Betty's (America Ferrera). Vale, who stars as Lety in the hit Mexican telenovela La Fea Más Bella, will guest star as her assistant, Angélica. Gershon will reprise her role as cosmetics mogul Fabia, who turns up at Mode to once again torment her nemesis, Wilhelmina Slater (Vanessa Williams).

Ugly Betty stars America Ferrera as Betty Suarez, Eric Mabius as Daniel Meade, Alan Dale as Bradford Meade, Tony Plana as Ignacio, Ana Ortiz as Hilda, Ashley Jensen as Christina, Becki Newton as Amanda, Mark Indelicato as Justin, Michael Urie as Marc, Kevin Sussman as Walter, Rebecca Romijn as Alexis Meade and Vanessa Williams as Wilhelmina Slater.

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