sex appeal 
noun [mass noun]
The quality of being attractive in a sexual way: she just oozes sex appeal...
- With his dark brown eyes and short black hair, he seemed to ooze sex appeal with just a hint of danger.
- They certainly do not perceive age as a barrier to exploiting their femininity or sex appeal.
- Sometimes, certain women characters are included just to add sex appeal to the drama.
Synonyms
sexiness, seductiveness, sexual attractiveness, desirability, sensuality, sexuality;
magnetism, charisma
informal it, oomph, SA