The 24-year-old Bajan singer was wearing a pair of thigh-high leather Christian Louboutin boots, along with a pair of tiny denim cut-off shorts and a flame-print T-shirt.
The Tube has become a regular mode of transportation for the beauty, as she rode The Jubilee line in February to the BRIT awards rehearsal and last October for her own concert at the O2 Arena.
In February after riding the tube Rihanna said....
'Me and my fans went to the concert together. That was the coolest part. I enjoyed it. I’m not afraid of interacting with people.'