Rod Stewart's daughter to wed musician boyfriend

Rock playboy Rod Stewart's model daughter Kimberly is reportedly set to tie the knot with a musician.

Kimberly, whose mother is Rod's first wife Alana, showed off her engagement ring when she and her boyfriend, musician Cisco Adler, stepped out together at the Radio Music Awards in Los Angeles.

Adler and the 25-year-old Kimberly have apparently been "unofficially engaged" for some time, despite a reported split earlier this year.