Ariana Grande's older brother Frankie is heading back to Broadway after landing a role in hit musical Rock Of Ages.

YouTube.com star Frankie Grande, who recently finished fifth on U.S. reality show Big Brother, will play German developer Franz at the Helen Hayes Theatre from 10 November (14) until 18 January (15).

The 31 year old admits the job is a dream come true after previously auditioning for the same part over the years.

He says, "I'm so unbelievably excited. I have wanted to play Franz ever since I first saw the show. I think it is one of the best, funniest, most clever roles."

Celebrating the news on Twitter.com, his pop star sister writes, "huge congrats to my big brother @FrankieJGrande going back to Broadway. so so proud of u! u deserve it (sic)".

Frankie is no stranger to New York's famous theatre district - he previously appeared as part of the cast of Mamma Mia! in 2007, while Ariana followed in his footsteps by featuring in Broadway's A New Musical in 2008.