Erotic novel in which old queen with a welcoming cleavage liberates Americans (6,6)
I believe the answer is:
bodice ripper
'erotic novel' is the definition.
'bodice ripper' can be an answer for 'novel' (I've seen this before). I am not certain of the 'erotic' bit.
'old queen with a welcoming cleavage liberates americans' is the wordplay.
I cannot really see how this works, but
'old' could be 'o' (common abbreviation eg in OE for Old English) and 'o' is found within the answer.
'queen' could be 'er' (short for Elizabeth Regina ie Queen Elizabeth) and 'er' is present in the answer.
'a' could be 'per' (eg 'one a day' means 'one per day') and 'per' is found in the answer.
This explanation may well be incorrect...
'in which' is the link.
Can you help me to learn more?
(Other definitions for bodice ripper that I've seen before include "Steamy tale" , "Type of 8, sexy and 10" , "historical romance?" , "revealing title" , "Sexy historical film" .)