All tied up

A little while later, you check yourself out in the mirror again and you have to admit you didn't to too badly.

With your hair tied in two bunches, your glasses, some dotted on freckles and cherry red lipstick you look cute, a lot younger too. Going downwards, your blouse is unbuttoned a fair way to just reveal the top of your best, black lacy bra, your ample cleavage on show as your breasts swell, pulling the blouse tight. Your old school tie hangs down loosly tied and the short black pleated skirt blooms outwards off your wide hips, accentuating your narrow waist.
If you lift the hem just a little you can see the garter straps and lace tops of your stockings, and to set the whole look off, you've put on a pair of shiny black heels.

"All I need is a lollipop to suck on!" you say, and then blush and giggle.

Now you need to decide whether you are going to brazen it out on the journey to the party and go just like this, it's not too cold, you could just go as you are. Or, maybe you should cover up a little, best not to draw too much attention. Your raincoat with the hood would work.