Forgot Rihanna and Ciara had beef back in the day? Well, here's a pleasant reminder.
The R&B twosome got into a heated Twitter feud back in 2011 after Ciara said she had an unpleasant "run-in" with the singer and RiRi "wasn't the nicest" on an episode of E!'s Fashion Police.
Of course, that didn't sit well with the feisty pop star, who proceeded to engage in an all-out Twitter war with Ciara, dissing the singer and posting, "My bad Ci, did I forget to tip you?" on her micro-blogging page.