RiRi, 26, was pictured leaving Nobu restaurant in the English capital on Sunday evening (10 March) just seconds apart from rap star Drake, before both artists apparently headed to a local recording studio.
While Drake looked smart in an overcoat, a blue jumper and navy blue boots, his date kept things casual with a pair of ripped jeans and an oversized red and blue jersey.
Covering her head with a white hood, Rihanna also appeared to be wearing minimal make-up, although she did add a touch of glamour to her outfit with a pair of silver heels.
This is the latest in a string of RiRi and Drake sightings over the last couple of weeks, as the Bajan pop songstress appears to be following her ex-flame around Europe on his current tour.
Last month, Rihanna joined Drake at his concert in Paris, where the pair performed their hit track 'Take Care' live for the first time, as well displaying a great deal of chemistry on stage in front of thousands of fans.
She had also been partying with the Canadian rapper in the French capital the previous night, taking time out of her fashion week commitments to see him.
And if that isn't enough to prove that the twosome are fast becoming inseparable, the 'Diamonds' singer was caught dining out with Drake in Amsterdam last week too, before they headed to Germany for the next tour show.
These frequent outings together have sparked fresh rumours that the chart-topping music artists are back together again, following a brief fling in 2009.
Rihanna and Drake's relationship has always been something of an enigma, since neither star has ever confirmed they were actually an item.
In fact, Drake recently claimed he and the Bajan beauty have only ever been friends, affectionately referring to RiRi as his "dog for life."
We can't figure them out!
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