Second season.
Ninth season.
Lio Tipton (born Analeigh Christian Tipton) is an American model and performer. They have starred in various movies, including The Green Hornet and Crazy Stupid Love, and television series such as America's Next Top Model. They have appeared twice on TBBT: in "The Panty Piñata Polarization" as one of the models that Howard and Raj meet at the house used in America's Top Model, and in "The Mystery Date Observation" as Sheldon's potential date. Tipton is non-binary and uses they/them pronouns.
