Mary J. Blige stars in 'Rock of Ages'.

Mary J. Blige is usually a serious person but she certainly lets loose in this new preview of her first major film, ‘Rock of Ages’. Belting Journey’s ‘Anyway You Want It’, the R&B diva is joined by her co-star Julianne Hough as she gets into the character of Justice.

‘Rock of Ages’ will premiere on June 15th and stars several movie megastars, such as Tom Cruise, Alec Baldwin and Catherine Zeta-Jones. Watch Blige and Hough in action below:

Photo by Warner Bros.

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