In an older post, someone mentioned it may have been from a sugar daddy or something. Also Yasmin mentioned in her stories one time that the bag was "a gift from a former client". Way to be vague lol. It doesn't line up with her repeated claims that just a a few years ago she was broke and how proud she was to be making a good living for herself now. Someone who was broke can't afford a Birkin and even someone with money won't get a Birkin just by walking into Hermes. I do think it's real, but how she got it remains a suspicious mystery.
Also, I'd love to know how she and Kelly became friends, to the point where she visits her in Monaco and has girls weekends with her. No way was it just over DM.