She's come a long way since, but Lady Gaga once had a guest spot on the HBO hit show 'The Sopranos' when she was only 15-years-old.

The controversial superstar was still a brunette and known simply as Stefanie Germanotta when she appeared in the episode titled, 'The Telltale Moozadell'.

In the episode, she wears a midriff-baring top and smokes a cigarette as she plays in a pool scene with Tony Soprano's son A. J. and his friends, as they swim in a high school pool. Gaga plays one of three girls who watch on.

Gaga then bursts into fits of laughter with one of the girls as the other girl joins the boys in vandalising the pool area.

Check out the teenage Gaga in a clip from 'The Sopranos' below: