`Cheers (Drink to That)` singer Rihanna is close to the `Firework` star and hoping to help her get over her 14-month marriage to Russell Brand - which ended in December - by getting back on the dating scene.

A source told HollywoodLife.com: "Rihanna wants to help Katy in any way she can. She is telling her that she`ll start setting her up!"

Katy`s friends are also keen on the idea of her finding a new romance, instead of "wasting time" crying over Russell.

The source added: "Katy has been very upset about the divorce. She never expected it to end and now she`s dealing with the aftermath.

"But her friends are telling her to get back out there and date. They don`t want her to waste time being upset over Russell."

It would appear Katy, 27, is at least open to having a good time, as she and friends were spotted out partying until three in the morning earlier this week.

A source said: "She was also with a bunch of male friends, and they played numerous games of bowling.

"They were drinking mixed vodka drinks and having a blast."

Meanwhile, Russell - who is also in Los Angeles - is rumoured to have recently spent a night with model and artist Oriela Medellin Amieiro, and sources have suggested he is already going back to the womanising ways he was famous for before he met his wife.

A source told Us Weekly magazine the `Arthur` star is "definitely playing the field. And he never mentions Katy."
sections: Celebrities