I don’t trust anything these days, and this sort of appeared out of nowhere, so caveat surfor.
It is one of three things
1. An outtake from the promotion for Sydney’s “Birthday” line, with an escaped nipple
2. An AI fake created to look like that.
3. A legit image, but with no nipple. Based on the angle, that could be a finger from her other hand. Her nipple should be lower.
I don’t know, but my best guess is #3.
Here it is:

That’s her other arm holding the cake
That would be my vote as well.
Gee, if only there were a picture of her actual nipple available somewhere we could use as a comparison.
That bit of sarcasm out of the way, I’m flummoxed as to how anyone could think that’s anything BUT one of the fingers on her other hand.
Finger for sure.
Yeah that’s a finger.
But we’re talking about it. She knows how to market her product, that’s for sure.
What’s the big deal if it is her nipple? Pretty much every man in the western world has seen her nipples.
“The whole country could draw her tits from memory!” – David Mamet
I’d rather see some detail on that bare ass in her gambling app ad