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28 September 2012, 11:15 | Updated: 28 September 2012, 11:23
The 'We Found Love' star joined the Roc Nation man for a star-studded event inside the Barclay's Center.
Rihanna was pictured wearing a pyjama style suit as she joined Jay-Z for the launch of his new 40/40 nightclub at the Barclay's Centre in Brooklyn.
The 'Talk That Talk' star rocked the oriental-themed outfit as she joined a host of celebrity guests to celebrate the opening of the venue last night (27th September).
The venue will take on a different identity to the rapper's Manhattan club of the same name, and the Center will play home to the Brooklyn Nets basketball squad with the view to stage live concerts.
"I walked around here earlier and I just seen everybody busy and at work trying to finish up and it was a great feeling," Jay told reporters as he walked the red carpet.
He told MTV News: "A guy stopped me in the hallway and said, 'Man this is a great thing for New York City.' And that's what the whole thing was about."
Rihanna had earlier arrived back in New York following a short trip to the UK as she unveiled her new single 'Diamonds'.
The new development will have 101 luxury suites, four bars and lounge destinations, three clubs and Jay's 40/40 Club and Restaurant.
Meanwhile, Jay was recently hit back at reports suggesting his wife Beyonce was pregnant with their second child, clarifying they have no immediate plans for another baby.