Hawt = A late 1940's and early 1950's acronym for "Having A Wonderful Time."
Now the word is used on the internet as slang for something reeeeally hot.
Victoria Beckham arrived in London last week wearing this ridiculously awesome trench-cape dress by Junya Watanabe for Comme Des Garcons. Victoria completed her outfit perfectly by wearing some black Giuseppe Zanotti Suede Hidden-Platform Booties, a rose-gold Rolex and her own Victoria Beckham black Granny Cat sunglasses. SO chic and SO bizzarely similar to how I look when I disembark from an eleven hour plane journey...