Treating herself to a round of retail therapy, Rihanna exercised her credit card at the Mountblanc Boutique in Beverly Hills on Friday (4/5/2013).

Sporting a distressed denim dress and a black leather baseball-style cap, the “Diamonds” diva was mobbed by fans as she finished her shopping.

Happy to oblige the gathered masses, the Barbados native posed for snapshots with ecstatic children and signed autographs for others before heading on her way.

The Unapologetic songstress was accompanied by her birthday girl mother on the retail adventure, and seemed proud of their results, tweeting, “Me and Mama Fenty doing some bday damage! She’s radical man!”