CYNDI LAUPER and BRITNEY SPEARS

The Girls Just Wanna Have Fun singer reportedly invited troubled Spears to join the gay rights touring revue onstage at Los Angeles' Greek Theater last summer (Jun07) - but she ignored the offer.

Lauper and producers of the tour aren't giving up, however - they've re-approached the Toxic singer with an offer to join them on the road this year (08), according to E!online.com.

The 2008 True Colors tour kicks off in Boston, Massachusetts at the end of May (08), and features Lauper, comedienne Rosie O'Donnell, the B-52s and Joan Jett And The Blackhearts.

Source: WENN