Another day, Another swimsuit and Another activity, Another day in the life of Rihanna on her Hawaiian getaway.

This time around the 23-yr-old Bajan rockstar was spotted out paddle boarding in the ocean yesterday afternoon Jan 18.

And of course she tweeted some photos with her friends hanging out – check them out below.

Yesterday, RiRi also revealed via twitter that she will be performing “Princess of China,” at the 2012 Grammy Awards with Coldplay.

“My friends @ColdPlay and I will be sharing the stage for a performance at this years Annual Grammy Awards!” Rihanna tweeted, followed by, “WE reached 2BILLION views on @youtube !!! THANK U!!! I’m in a great mood, and I got some GREAT NEWS!!! PRINCESS OF CHINA #GRAMMYS2012.”