But the "Turn Up The Music" singer didn't stop there! Later, the 24-year-old right-hand woman tweeted a photo of her right hand rocking diamond rings with the caption:
"Kind of speechless right now.."
We're sure any girl would be speechless after a surprise like that!
Karrueche then expressed how happy she was, tweeting:
"You've made me the happiest birthday girl EVER"
Maybe for the big 25th birthday celebration of Chris Brown's main squeeze, we can expect an engagement ring?!
While the media has continuously speculated that Breezy is fooling around with ex Rihanna, it looks like he only really has eyes for one special lady.