Los Angeles: Aerosmith rocker Steven Tyler is set to tie the knot for a third time after reportedly proposing to his longtime girlfriend Erin Brady.

Brady, 38, was spotted wearing a diamond ring on her wedding finger during a Christmas vacation with the rocker in Hawaii, TMZ online reported.

The couple has been dating since 2006, shortly after Tyler divorced Teresa Barrick.

Tyler, 63, who is also the grandfather-of-one, has been married twice previously. His first marriage to Andy Warhol model Cyrinda Fox lasted from 1978 to 1987, just before Aerosmith had their wildly successful comeback.

The multimillionaire star was also married to clothing designer Barrick from 1988 until 2006.