Rihanna may have hit the Grammys carpet solo, but that didn't mean she was manless all night.
The double winner met up on the sly with baseballing beau Matt Kemp at an afterparty. They both hit Drake's bash at Guys & Dolls, where Jay-Z and Beyoncé also made a surprise appearance.
"Jay decided to crash Drake's party in a good way," an eyewitness tells us. "He brought the whole crew!"
Hova was helping Beyoncé celebrate her big night in major style...
"They went through 12 bottles of Ace of Spades champagne in 90 minutes!" the partygoer dishes. Jay also toasted his better half to the packed club, "To B., who breaks all barriers!"
Although Ri-Ri and Matt first shared a table for about 15 minutes, the songbird then headed over to mingle with Jay, B., Drake and Lil Wayne.
"Rihanna just wants everything to be private with her relationships after Chris Brown," an insider explains.
The group partied until around 2 a.m., and while Jay, B and Ri-Ri all came out the front exit, Matt made a quick exit through the back for his Bentley.
That wasn't the Grammy-winning trio's only soiree stop of the night...
Jay-Z also helped host L.A. Reid's party at Cecconi's restaurant, with Beyoncé and Rihanna along for the ride. Jennifer Lopez, Justin Bieber and Nicole Richie were among those in the house.
—Additional reporting by Christopher Hall
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