Feud schmeud. All that talk about Katy Perry and Rihanna being on the outs over Ri's renewed relationship with Chris Brown is nothing but nonsensical talk. Perry proved their BFFdom remains in tact with a sweet and cute tweet sent to the birthday girl today (Feb. 20).

Katy tweeted: "HAPPIEST 25TH BIRTHDAY to my baby girl @rihanna! I wish I could b there drinking Mai-Tais & telling haters to eat a d-ck w/u!"

Stories circulated that Perry is so miffed about RiRi taking up with Breezy again that she refused to sit next to her bestie at the 2013 Grammys, causing a big pain in the rear for the people in charge of the seating arrangements. They weren't photographed together, which lent a little credence to the rumor.

Perry's tweet expresses how much she wishes she could be tearing it up and celebrating with the 'Stay' singer, who wore an in itty bitty bikini and smoked some blunts while sunning and funning in Hawaii to celebrate her quarter century mark.

The fact that they were apart for Ri's bday just means that the girls will have to have a road trip or a getaway weekend. Maybe their respective BFs -- John Mayer and Breezy -- can make it a guy's night out while their ladies are gone. We can't even begin to imagine the trouble to those two would get into.

Watch the Rihanna 'Stay' Video