Janet Jackson was almost unrecognisable as she stepped out in London last night.

The singer - whose figure has fluctuated dramatically over the years - looked like she has piled on the pounds again.

The star is in England's capital to support older sister La Toya during her stint in the Celebrity Big Brother house.

But Janet was dressed in baggy clothes, despite heading to exclusive nightclub Mahiki in Mayfair last night.

Since finishing her tour last year, Janet may now be stuggling to keep the weight off without the added help of her stage routines.

See more of Janet in London below