Fleetwood Mac fans: Don't stop...thinking about Christine McVie's return. The suddenly reclusive singer, after consistently rebuffing such suggestions before, is now hinting that she might join her old group during its three-night stand at London's 02 Arena this September, which would be her first such appearance since retiring from music in 1998.

"If they wanted me to, I might pop back on stage when they’re in London," McVie tells Metro, "Just to do a little duet or something like that."

A long-hoped-for reunion with McVie would cap a busy period for Fleetwood Mac, which has been at work recording its first new material since 2003, prepping for this major tour, and overseeing a deluxe reissue of their career-defining smash ‘Rumours.’

McVie, of course, sang on that album's hit songs 'You Make Loving Fun' and 'Don't Stop,' as well as other familiar Mac tracks like 'Over My Head,' 'Think About Me,' 'Hold Me' and 'Little Lies' over a tenure that began at the turn of the 1970s.

She retired rather than participate in 2003's 'Say You Will,' however, and has rarely been seen since. In fact, McVie's attended just one concert by her former band since departing -- and, even then, she declined to come on stage.