Rihanna seems to be having the time of her life during her birthday week. The Diamonds singer, who turned 25 on Wednesday, Feb. 20, celebrated all week in Hawaii with her boyfriend Chris Brown, family members and close friends.

Rihanna began the day by writing a tweet to her fans that her birthday was already off to a good start.

"#epic day already, I woke up to sunshine in paradise and #STAY done jumped 54 spots to #3 on the BillboardHot100!" she tweeted at the start of the day. "Walked up into #2013 like I owned a ho."

Rihanna was seen with Brown, 23, on Wednesday as they took a stroll together on a Hawaii beach. The Bajan beauty was holding a rolled up brown cigarette as she sported a bright pink bikini with fishnet cover-up. Brown was wearing an athletic sports jersey and red swim trunks that could barely stay on.

Later, they rode the back of a limousine together around the tropical island.

"Pour it up pour it up! #birthdaybehavior," she wrote with a photo attached of herself sitting on his lap.

Rihanna shared a series of personal polaroid-style pictures on Thursday that were taken at her private birthday party that was thrown for her on Wednesday night. The intimate event reportedly took place in a hotel room at an unknown resort in Hawaii.

In one photo, Brown is standing behind her and nuzzling her neck as she smiles for the camera. In another, he is holding the small of her waist as he leans his face against the side of her arm. Rihanna also shared pictures of her birthday cake which had icing in the Jamaican Rastafarian colors of red, yellow and green and was decorated with gold marijuana leafs. She also posted one of her birthday gifts of a Goyard handbag.

And the celebrations did not end there. On Thursday, Rihanna was seen riding the back of a jetski with pro-surfer Makua Rothman as he steered the control.