midi dress for holiday Blackwatch Lurex Clip Dot Smocked Waist Blackwatch / L / H2472 Savannah is wearing the small. Women's Summer Tank Dress Sleeveless

Sleeveless Poplin Ruffle Shirt, $58, Topshop 13

And whatever you do, please make sure your belt matches your shoes

A glamorous fold-over detail forms the off-the-shoulder collar that tops the tight spandexevening dress

These pieces also offer versatility, as they can be worn during the ceremony and easily removed for the reception

"There's a little more flexibility with the tie these dayslike when wearing a turtleneck underneath a sports coat or blazer, or if it's the summertimebut traditionally, cocktail attire means a tie," says Hurwitz

Some venues take Christmas bookings as early as July and August, so if you have any specific place where you would like to throw a Christmas party, its better to book it fast