Carmen Osbahr-Vertiz (born April 21, 1962) is a Mexican-born American puppeteer and voice actress who has puppeteered Rosita in the popular US children's series Sesame Street, since 1991. Osbahr has also puppeteered Kiki Flores in The Puzzle Place and Lily in Johnny and the Sprites. Rosita and Armando (Ismael Cruz Còrdova) appeared to promote season 44 of Sesame Street. September 8–10, 2017, she was an additional Muppet performer for a live show at the Hollywood Bowl titled The Muppets Take the Bowl.