Small fairy that is Snap (6)

I believe the answer is:

selfie

I'm a little stuck... Click here to teach me more about this clue!

'is snap' is the definition.
(type of photograph)

I can't explain the rest of the clue.

(Other definitions for selfie that I've seen before include "21 [PHOTO]" , "Personal photo" .)

I've seen this clue in The Times and The Sunday Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.