Rihanna ‘treats Adele to naughty cake’

Rihanna reportedly bought a racy birthday cake for Adele over the weekend.

The Bajan-born singer is good friends with the British star. To celebrate Adele turning 24 on Saturday, Rihanna decided to order a cake in the shape of a pair of breasts.

She had the gift delivered to Adele's North London home along with the message: "To Adele Laurie Blue Adkins, the baddest b***h around. Have the best freaking Bday. Cake cake cake xxx"

The sweet treat was made from sponge and covered in pink icing. It also had two "strategically place iced gems", reports British newspaper The Sun.

Rihanna also took to her Twitter account to pay tribute to Adele on her special day.

"Happy Birthday to my lover, Adele," she wrote.

According to the publication, the sexy star also took a topless photo of herself covering the iced gems with her hands.

Adele decided to keep her birthday celebrations low-key this year.

She spent the day with her boyfriend Simon Konecki and invited her closest friends over to her home for a wine-fuelled party.

Rihanna has made no secret of her admiration for Adele.

Earlier this year, she joked that she had only performed at the BRIT Awards in London to "stalk her".

She also vowed to confront anyone who is negative about the star.

"Well who doesn't like Adele? Honestly, if I find somebody who doesn't like Adele there will be trouble. I'd take that very personally!" she laughed.