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Congratulations are in order for Rihanna.

The pop superstar has finally scored her first No. 1 album on the U.S. Billboard 200 Albums chart with her recently released Unapologetic.

And the "Diamonds" singer took to—where else?—Twitter to share her excitement over the milestone.

Rihanna tweets topless photos

"Wait!!!!! What the F--K?!!!!" the 24-year-old Barbadian beauty tweeted. "#UNAPOLOGETIC just debuted at #1 in AMERICA!!!!! My first number 1 album there!!! Thank you Navy, u deserve it."

Rihanna followed the post up with, "I'm legit crying like a p--sy right now!! #UNAPOLOGETIC."

Unapologetic is Rihanna's seventh album in seven years, and her latest single, "Diamonds," has spent the past two weeks at the top of the Hot 100 list, making it her 12th No. 1 hit!

Meanwhile, Unapologetic is Ri-Ri's fourth No. 1 album over in the U.K.

See Rihanna's Sexy Twitpics