She is reported to have demanded four dressing rooms for herself and her entourage at the Capital FM Jingle Bell Ball - apparently leaving UK stars like Olly Murs and Pixie Lott getting changed in broom cupboards (or something like that).
The Sun quoted a source as saying: "Rihanna brought a huge entourage with her and asked for them all to be looked after with food and drinks.
"And backstage she needed one room for her bags, one for clothes and two for her team to use."
Rihanna may have topped the bill, but the show also featured a host of homegrown talent, including Jessie J dressed as a Christmas cracker, Olly Murs wearing another bloody trilby, JLS and One Direction.
We told you recently how Rihanna turned to her pal Beyoncé when it was all getting a bit too much for her.