0 .02br 00You could say this:02br 02br 00(a) 01b00Everyone02b00 wore their 01b00cone-shaped02b00 hats at the party02br 02br 00But a natural expression would be:02br 02br 00(a)01b00 Everyone02b00 wore their 01b00party hats.02b0-
0Hi02br 02br 00You need a paticipial adjective :-02br 02br 00cone 01b00shaped02b00 hats02br 02br 00And I presume you meant Everyone.02br 02br 00All the best0-