Posted on Wed Feb 20, 2013 11:40 AM PDT
Rihanna is celebrating her young age of 25!
The sexy songstress, who just signed a partnership deal with MAC, posted the above photo and the following: "I'm an old bi**h now! Thank God for His gifts and His endless mercies! #25 #MilestoneLife"
Various online reports claim RiRi's on-again-off-again-on-again beau Chris Brown is with the birthday girl in Hawaii to celebrate her big day ... AND to propose.
The "Umbrella" singer's family is also said to be there for the proposal.
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