Basket girl found in seaside attraction (7)
I believe the answer is:
pannier
'basket' is the definition.
(I know that pannier is a type of wicker basket)
'girl found in seaside attraction' is the wordplay.
'girl' becomes 'ann' (woman's name).
'found in' indicates putting letters inside.
'seaside attraction' becomes 'pier' (structure by the sea).
'ann' going inside 'pier' is 'PANNIER'.
(Other definitions for pannier that I've seen before include "Basket on, eg, donkey" , "dosser" , "Carrying basket" , "Basket carried by animal" , "Basket carried by beast of burden" .)