She's been putting on a loved-up display with beau Roman Gavras throughout the summer on their sun-soaked holidays to Ibiza and Corfu.
And Rita Ora sparked engagement speculation as she stepped out wearing a ring on her wedding finger on Friday.
The Girls singer, 29, appeared to be in good spirits as she left Mexican restaurant Taqueria in Notting Hill, London, and flashed her dazzling jewel at photographers.
Happy news? Rita Ora sparked engagement speculation as she stepped out wearing a ring on her wedding finger after dinner out in London on Friday
Rita put on a stylish display as she headed home from the evening out with her sister Elena and pals while wearing a shiny black padded jacket and soft hat.
She kept things casual with the rest of her ensemble, donning a pair of jogging bottom trousers and a jumper with a red and white pattern on it.
A diner at restaurant told The Sun on Sunday: 'Rita was showing off the ring on Thursday with the women seemingly cooing over it.
Casual: The singer cut a fashionable figure as she stepped out in a shiny black jacket and comfortable trousers
Dazzling: Rita flaunted the sparkling jewel which appeared to be a sapphire and diamond ring
'She seemed in high spirits when she left the restaurant and then shoved her hand in her pocket.'
While James Constantinou of Prestige Pawnbrokers said Rita's new piece of jewellery appeared to be a sapphire and diamond cluster ring, which if an antique piece, could cost around £50,000.
However despite the speculation, a source close to Rita told the publication that the singer has simply treated herself to a new flashy piece of vintage jewellery.
MailOnline has contacted Romain Gavras representative for a comment. While Rita's spokesperson declined to comment.
Couple: Rita and Romain have enjoyed trips to Ibiza and Corfu over the summer and were first seen together in July (pictured in Ibiza in August)
Relaxed: Rita kept things casual for dinner, donning a pair of jogging bottom trousers and a jumper with a red and white pattern on it
Speculation: A source said Rita 'was showing off the ring with the women seemingly cooing over it'
Eye-catching: The large ring appeared to be a sapphire surrounded by sparkling diamonds
Rita has been dating Greek-French director Romain, 39, for the past few months after they were first seen together in July after a night of partying.
Speaking to The Sun, friends insisted she was involved with the filmmaker after she was seen enjoying a boozy night out with business tycoon Faton Gashi.
A source said: 'Rita was hitting the town with friends including Faton.