Have a holiday party and stuck for ideas on how to dress up items from your closet? The fastest way to update anything this season — from dresses to T-shirts — is to add a major statement necklace.

Even the most basic item, like the plain white button-down shirt Eva Mendes wore to a film premiere last night, gets attention when paired with this look-at-me accessory. And since bolder is better, you can let your personality shine through your choice of necklace. (Ahem, yes, that is an extra-large panther on gorgeous cougar Demi Moore's neck.)

If socialite Olivia Palermo’s $550 Swarovski
style is too rich for your blood, try out this look-alike from http://www.dillards.com/webapp/wcs/stores/servlet/ProductDisplay?catalog...
" target="_blank">Dillard’s (below) for just $58.

Photos: Neilson Barnard/Getty; Olivia-Amy Sussman/Getty; Jason LaVeris/FilmMagic