Properties of underwear that will inspire cuddling (13)
I believe the answer is:
smallholdings
'properties' is the definition.
(smallholding is a kind of property)
'underwear that will inspire cuddling' is the wordplay.
'underwear' becomes 'smalls' (I've seen this before).
'that will inspire' indicates putting letters inside.
'cuddling' becomes 'holding'.
'smalls' going around 'holding' is 'SMALLHOLDINGS'.
'of' acts as a link.
(Other definitions for smallholdings that I've seen before include "agricultural areas" , "crofts?" .)