What gentleman getting ready to attend formal event might do to woo? (5,4,4)

'attend formal event might do to woo?' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.

'what gentleman getting ready' is the wordplay.
I cannot really see how this works, but
'getting' could be 're' (I've seen this in other clues) and 're' is located in the answer.
'ready' could be 'on' (if a device is on it is ready for use) and 'on' is found in the answer.
This explanation may well be incorrect...

'to' is the link.

Can you help me to learn more?