Alison Bartlett O'Reilly (born July 14, 1971) is a New York-based actress who has portrayed Gina Jefferson on Sesame Street since 1987, and has reprised the role in various related specials, direct-to-video productions, and The Adventures of Elmo in Grouchland. Bartlett began her career as a child actress, appearing at the age of 12 as Joanne in the 1984 stage production of Landscape of The Body, co-starring Dann Florek and directed by Gary Sinise. Other stage credits include the role of Donna in the Broadway show Hurly Burly from 1985, and O…