To date, Porter has released one album of solo material, Something Good, in 2002, and has also worked as a back-up singer for Queen, Tony Hadley, Edwin Starr, Kiki Dee, Paul Rodgers, Sam Moore, Mel B and Chaka Khan.
She appeared in the West End in such plays as Only the Lonely, Sunset Boulevard (opposite John Barrowman and later Hugh Jackman), Saucy Jack and the Space Vixens and Ben Elton's Tonight's the Night.
After relocating back to New York, getting married and becoming a mother, she recorded an album of standards with James Pearson, released as Gems for Ruby on the Swing Cafe label.
Porter has also made brief excursions into films, making cameo appearances in Die Another Day and Batman Begins.
In 2001, she appeared on stage with comedian Rich Hall, singing three tracks with his character Otis Lee Crenshaw - a performance released on DVD, VHS and audio CD.