From the looks of it, Asghari posted the photo on his official Instagram account, though it is not currently up at the time of posting.
If the photo is edited, no one can pinpoint where the original candid pic of Britney came from.
There's also a green haze covering the photo, which is a similar treatment to a photo the Holy Spearit herself posted several months ago.
You also may recall she grabbed sushi with the original "Make Me" music video male lead.
I'm just going to leave these here.