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.
Poppy Delevigne arrived to take her seat on the Louis Vuitton SS’13 FROW on the final day of Paris Fashion Week looking très chic. The model wore a beautiful midnight blue pleated chiffon dress from the Louis Vuitton Cruise 2013 collection accessorised with the label’s navy blue perspex heels. Some red lipstick and a poppy red Louis Vuitton Speedy Bandoulière Monogram Empreinte bag added some colour to her look, and the shape of the bag made this outfit far more appropriate for the daytime than if she had chosen a clutch. Ooh la la. Très bien Poppy!