Celebrity Tweets 2/20

Today is Rihanna’s 24th birthday, and her fans and friends didn’t forget to send birthday wishes her way via Twitter.

“@rihanna HAPPY BIRFDAY u hoodrat, bearc--t, crazy, sexy ass, freaky whole bit beotch,” wrote fellow singer Katy Perry. “ I ♥ u so much. Keep it real tonight, as I know u will!”

Chris Brown and Rihanna are once again fueling rumors, most recently that they collaborated on Rihanna’s “Birthday Cake.” Those reports haven’t been officially confirmed by Rihanna, but that didn’t stop Chris Brown from sending a birthday wish.

“HAPPY BIRTHDAY ROBYN!” wrote Chris Brown. Robyn is Rihanna's real name. “Thanks” she wrote back.

“Happy birthday Princess Rih! <3 u so much @Rihanna! Proud to know you and be a fan! I'll be your S&M bitch any day! Ha x,” wrote celebrity blogger Perez Hilton.

“Ahhhhhhh ALL MY BDAY wishes from my DM to my TL!!!! KRAY! I truly love u guys, thank you so much #RihannaNavy for makin me feel special,” wrote Rihanna

Rihanna wasn’t the only one celebrating a birthday, though. Fans, friends, and celebrity fans alike recognized Kurt Cobain on what would have been his 45th birthday.

“Happy B-day Kurt Cobain,” wrote Paramore front woman, Hayley Williams.