Fashion model (4)
This clue is a double definition.
'fashion' is the first definition.
(both can mean to shape something for a purpose)
'model' is the second definition.
(both can mean to mould or shape)
(Other definitions for form that I've seen before include "Configuration; type" , "Visible shape, class" , "Seat" , "etiquette" , "Printed document with spaces to write" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">fashion model</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for mannequin that I've seen before include "Dummy figure" , "Display dummy" , "Shop's dummy" , "Life-size dummy for displaying clothes" , "fashion model" .)