[3] In the early 1970s, she acted in two films for Roger Vadim during three years that she spent in France.
She may be best remembered for her portrayal of untalented singer Sueleen Gay in Robert Altman's 1975 film Nashville, for which she was nominated for a BAFTA Award, for Best Supporting Actress.
Welles was an advocate of yoga, usually meditating 20–30 minutes twice a day.
"[4] During her time in Paris, she posed for a set of nude photographs for a magazine to earn money to remain there another year.
Donna Deitch directed An Angel On My Shoulder, a documentary about Welles' illness in 1992, which appeared at the IFC's Lesbian and Gay film festival in August 1998.