Welles performed in adult films between 1988 and 1999 and also directed several movies in the early 1990s.  In 1997 Paul Norman released a private home video of himself and Welles, filmed after their divorce, called The Private Diary of Tori Welles . Welles was reportedly angry but said she had no legal basis to stop its distribution. 
Welles is a former contract performer with Vivid Entertainment.  She has also worked for production companies such as Caballero Home Video, Evil Angel, VCA Pictures, and the Zane Entertainment Group. 
Welles has appeared in a variety of minor mainstream acting roles such as the 1995 Clint Howard horror-comedy Ice Cream Man (credited as Brittania Paris) and a 2006 episode of the comedy series Scrubs . She was also featured in 1993 on the Swedish late night talk show Adam . Welles also has director, producer, costume & wardrobe, and writing credits. 
In March 2012, Welles and Tom Byron launched Hall of Fame Management, a talent agency that represents pornographic actors, directors, editors, photographers, and other adult industry workers.  She also has her own production company called Tori Welles Entertainment. 
She was married to adult film producer Paul Norman.