Rihanna's Pyjama looking outfit. What say you.

I don't know if she thought it was a pyjama party or what, but RiRi wore this to the opening of Jay-Z's new club in Brooklyn. 

The 24-year-old star arrived at the opening of the 40-40 club in the Barclays Centre in loose matching Acne shirt and trousers combination, red Lippy, brown sandals and a sparkly necklace for a night out.