Dorothy Williams is a handicapped cancer survivor from Hilo, Hawaii.
Dorothy was born in Chicago, Illinois in 1926. At 17, Dorothy Williams started taking tap, acrobatic, ballet and character dancing classes and entered show business as a chorus girl, solo dancer and as a sister team with her sister in various nightclubs. They performed in Chicago full-time after graduation. After seven years, she went to work in a supermarket for 25 years, but continued her performing on weekends. She also became a clown, waitress, taxi driver and had her own dancing school. Williams got married and moved to Hilo, Hawaii. There she became Yummy the Clown for the next 40 years. She also volunteered as Welcome Wagon Lady for 20 years.
Now she is the president of a senior center, where she teaches and performs ukulele, tap, hula and line dancing. She wants to be an inspiration to seniors to keep on doing what makes you and everybody happy, no matter what. 
Dorothy Williams' audition in Episode 1106 consisted of briefly singing "Let Me Entertain You" from Gypsy and then dancing and stripping her clothes to David Rose's "The Stripper." Moved by her performance, host Nick Cannon pressed his Golden Buzzer to send Dorothy straight to the Quarterfinals.
Dorothy Williams' Week 1 Quarterfinals performance in Episode 1111 consisted of dancing and stripping her clothes to Louis Prima's "Sing, Sing, Sing (With a Swing)," this time with a large group of background dancers. Howie Mandel, Heidi Klum, and Simon Cowell gave her standing ovations. Dorothy did not receive enough votes to be sent to the Semifinals in Episode 1112, eliminating her from the competition instead of Musicality.
- Dorothy was the first (and only) act Nick Cannon ever pressed his Golden Buzzer for.
- Dorothy is the oldest contestant to ever make it to the Quarterfinals.
- Dorothy was the first Golden Buzzer act to have finished in the bottom 4 during the Quarterfinals she was followed by Flau'jae, Quin and Misha and Joseph Allen.
- Dorothy was the final televised audition of Season 11.