Girl leading a fete? (4)
I believe the answer is:
gala
'fete?' is the definition.
(I've seen this before)
'girl leading a' is the wordplay.
'girl' becomes 'gal' ().
'leading' says to put letters next to each other (some letters go in front of others).
'gal'+'a'='GALA'
(Other definitions for gala that I've seen before include "Prod with the elbow" , "field day" , "Carnival, fete" , "Special social or sporting occasion" , "Social occasion with special performances" .)