Lady Gaga has played a small role on an old episode of The Sopranos when she was 15 years old and then she was using her real name Stefani Germanotta.
A 15-year-old Lady Gaga, portrayed a high school girl as one of A.J. Soprano's (Robert Iler) classmates, guest appeared on the Season 3 Episode 9 of The Sopranos entitled The Telltale Moozadell, which was originally aired on April 22nd, 2001.
The Paparazzi singer was seen smoking cigarettes together with her friends in the school pool when A.J. and his fellows were attending the swim practice. "Did you girls see me out there?" A.J. asked. "Yeah, it looked like you were cheating," Gaga laughed at.
Check out the video below for Lady Gaga’s The Sopranos appearance at age 15 in 2001: