Crossword Genius

Small fairy that is producing number one photo? (6)

Ross

I believe the answer is:

selfie

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

'number one photo?' is the definition.
'selfie' can be an answer for 'photo?' (I have seen 'Personal photo' mean 'selfie' so perhaps 'photo' could also mean 'selfie'). I am not certain of the 'number one' bit.

'small fairy that is' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'fairy' becomes 'elf' (elf is a kind of fairy).
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
's'+'elf'+'ie'='SELFIE'

'producing' is the link.

Can you help me to learn more?

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

I've seen this clue in The Times.
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