And best of all, it looks like this lucky lady continues to be showered with thoughtful gifts, long after her official party.
The star just tweeted a pic of a very special birthday gift sent by Riccardo Tisci of Givenchy: a custom designer T-shirt emblazoned with (what else?) her face on it!
How's that for some luxury label love!
She uploaded the momento to Instagram, tweeting, "Woooiiiii!!! How phucked up is this?!! Oh Riccardo, you really outdid yourself this time!!! What a wonderful surprise, thank you #Givenchy #VeRihRARE #PhreshOut #stayinyolane #phuckyolane #whatlane."
Oh Ri-Ri, who needs to write thank-you cards anymore when you've got a Twitter account?
What do you think of Rihanna's designer birthday gift?