Sexy photo of an ostentatious ace (7)

I believe the answer is:

hotshot

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

'an ostentatious ace' is the definition.
'hotshot' can be an answer for 'ace' (synonyms). I'm unsure of the 'an ostentatious' bit.

'sexy photo' is the wordplay.
'sexy' becomes 'hot' (similar in meaning).
'photo' becomes 'shot' (shot is a kind of photo).
'hot'+'shot'='HOTSHOT'

'of' is the link.

Can you help me to learn more?

(Other definitions for hotshot that I've seen before include "Expert" , "Important person" , "Top player" , "successful type?" , "Showily successful person" .)

I've seen this clue in the Sydney Morning Herald.

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.