What Is your most desired sexual feature In The Opposite Sex?

Unfortunately It is not easy to find someone of the opposite sex who has all one needs in terms of physical sexual features.A guy may see a bootilicious lady without a wow bust-line and sometimes come across a lady with an angelic face without "a nice tit or booty". And a lady may see a very cute guy yet there will be a but that seem to disqualify such. So my question to guys and ladies is "what is that one sexual feature you crave for the most in the opposite sex?..in other words,that sexual feature you can't imagine your partner not having Mine is a nice looking hips ...so what is yours?