UMBRELLA singer RIHANNA fuels speculation she is engaged to soul star CHRIS BROWN as she sports this huge diamond ring on her wedding finger.

Pals said Chris, 19, popped the question over the New Year.
Rihanna, 20, showed off the bling after performing with her fella at the O2 in London.

Despite the cold, she wore fingerless gloves and held her hand to her chest so people could clock the rock. A source said: “Rihanna was wearing the biggest diamond you can imagine.”