Rihanna wearing 'Chris Brown engagement ring' in new bikini photos
The 'Stay' singer can be seen with a diamond band on her ring finger in Instagram photos taken by her friend Melissa Forde, showing Rihanna smoking while posing in her swimwear.
Forde also uploaded a picture of Rihanna puckering up while wearing a long blonde wig, which came with the caption: "#myMarilynMonroe."
Forde was responsible for the photos of the 'Umbrella' star half-naked in furs that emerged back in December.
Instagram / Melissa Forde
Instagram / Melissa Forde
Meanwhile, Rihanna celebrated turning 25 today (February 20) on her own Instagram by uploading a photo of herself and Brown from her surprise 20th party in 2008, her last birthday before she was assaulted by the R&B star on February 8 the following year.
"#throwbackRiRi my surprise 20th birthday party!!" she wrote. "Im an old bitch now! Thank God for His gifts and His endless mercies! #25 #MilestoneLife."
Rihanna tweets picture of herself and Chris Brown at her 20th birthday party
Rihanna's father Ronald Fenty recently said that he approves of Brown marrying his daughter, declaring: "I would be ecstatic.
"[Brown] is a very old-fashioned kind of guy, with straight-up morals and he's always been very decent to me."
View all of today's best celebrity pictures - Photo gallery:
Copyright: Action Press/Rex! Features!