Hawty/ Haughty/ Hottie are all slangs derived from the
English word 'Hot'. They basically describe the appearance of
someone.
The literal meaning is Sultry: Sexually
attractive.
Person A (guy): '
You are nothing but a hottie.' (He means she is very
attractive. He does not
mean that she has a high temperature.)
Person B (the attractive girl): 'You flatter me.'