Beauty:

 „Beauty is grace arising from proportion, eligibility and harmony.“
(Cardinal Bembo approx. 1500)

 „Nothing is beautiful in its utmost, when something is beautiful it is so in some regard.“
(Giordano Bruno)

People aspire after harmony.

This ambition might be the principle in the need to achieve physical beauty as well-everybody observes beauty differently and sees his or her own beauty from a distinct angle. 

The whole concept of beauty is very subjective. Therefore we can’t really talk about ‘beauty surgeries’. On the other hand there is a body contouring, plastic-aesthetic surgery that is a very specialized and earnest form of cosmetic surgery.