Holding front of dress beside bustle (2-2)
I believe the answer is:
to-do
'bustle' is the definition.
(thesaurus)
'holding front of dress beside' is the wordplay.
'holding' indicates putting letters inside.
'front of' indicates taking the first letters (the letter at the front of the word).
'beside' becomes 'too'.
The first letter of 'dress' is 'd'.
'd' placed into 'too' is 'TO-DO'.
(Other definitions for to-do that I've seen before include "Quarrel" , "Kerfuffle" , "Fuss or commotion" , "Flap" , "Fuss and bother" .)