Rihanna is clearly in party mode since finally releasing her new album 'Anti' [review] last week.

The star appeared wearing a baseball hat and sweater at her fellow singer Miguel's gig in Los Angeles on Saturday night, and the pair duetted on the classic Temptations song 'My Girl' - although we're pretty sure that the word 'motherf*ckin' wasn't in the original.

Watch the intimate performance - which was part of Miguel's Wildheart Motel gig, where various performances took places in different rooms at different points of the night - below: