Pop star Janet Jackson has shocked fans with a raunchy performance in Los Angeles as part of her comeback tour.

Fans were left dumbstruck when she picked up a man from the audience, chained him up on stage and did some rather sensuous moves on him, reports dailymail.co.uk.

Janet sported a bizarre, futuristic cat suit and wild hair reminiscent of her 90s look.

The star kicked off the Rock Witchu tour in Canada earlier this month to promote hits from her 2006 album 20 Y.O and latest collection Discipline, which released in February.

The tour is Janet's first in seven years and features 38 songs, numerous costume changes and a flamboyant set.

American rapper and Actor LL Cool J opened the show while Spice Girl Geri Halliwell and Hollywood actress Queen Latifah were spotted in the audience.