Former quiz show host losing heart with stripped Disney heroine revealing something hairy (9)
I believe the answer is:
tarantula
'something hairy' is the definition.
(hairy animal)
'former quiz show host losing heart with stripped disney heroine' is the wordplay.
'former quiz show host' becomes 'Tarrant' (Who Wants to Be A Millionaire host Chris Tarrant).
'losing heart' suggests removing the centre.
'with' means one lot of letters go next to another.
'stripped' indicates the central letters.
'disney heroine' becomes 'mulan' (in the 1998 film Mulan).
'tarrant' with its middle taken out is 'tarant'.
The middle of 'mulan' is 'ula'.
'tarant'+'ula'='TARANTULA'
'revealing' is the link.
(Other definitions for tarantula that I've seen before include "Crawler" , "Creepy-crawly" , "hairy creature" , "Breed of spider" , "Large venomous spider" .)