PHOTOS: Rihanna flaunts her figure in see-through bra and silky pyjamas as she enjoys a drink very late at night in recording studio

Her fans have urged the star to speed up work on her highly-anticipated new album.

However, Rihanna seemed more than relaxed as she hit the recording studio for a late night session on Friday.

The stunning pop superstar, 27, appeared to be dressed for bed as she arrived for a stint in front of the mic at 3.30am.

Stepping out of the New York-based studio in the early hours, she shocked onlookers by sporting a see-through bra under silky pink pjyamas.

Showing off her taught stomach and tattoos by leaving her gown open, the star carried a drink as she strutted along the street in a pair of retro fluffy heeled slippers.