Rolling Stones frontman Mick Jagger is teasing fans about a possible 2012 reunion after revealing he and his bandmates secretly came together to work in a Paris recording studio last week.

Posting a new photo of himself holding a guitar on Twitter.com, the rocker wrote, "Had fun in the Paris studio this week!"

Weeks ago Jagger suggested the Stones could perform a 50th anniversary show this fall - but nothing has been confirmed to date.