PHOTOS: The Best, Worst & Wackiest Fashions Of The Weekend

From the glam red carpet of the Rome Film Festival to the streets of NYC, stars were dressed in the best, worst & wackiest fashions over the weekend -- and we are not just talking Halloween costumes! RadarOnline.com has photos of all the hot and not fashions in our weekly feature.

Eva Mendes continued her bombshell style streak, hitting the red carpet premiere of La Dolce Vita at the Rome Film Festival in truly radiant style. The brunette beauty rocked a one-of-a-kind drop-dead red Gucci gown, which clung to her curves in all the right places.

Jennifer Esposito (aka the former Mrs. Bradley Cooper) hit the streets of NYC looking like she was dressed up for Halloween -- but she wasn’t. The sultry actress was living large in baggy threads, which seemed more bag lady than bombshell!

Elizabeth Hurley and Gemma Arterton dazzled at the Elton John AIDS Foundation Winter Ball. While the supermodel rocked a curve-hugging, beige strapless Roberto Cavalli gown, the big screen babe opted for a sexy sequin vintage frock.

Demi Moore rocked a Posh (Victoria Beckham) frock to the PlusCity Charity Gala in Austria, while Sienna Miller sizzled in Stella McCartney in Germany.

Heidi Montag hit a Halloween party in Las Vegas, but we aren’t quite sure if her sexy mini dress was a costume or not?

Rihanna is The Only Girl In The World who thinks it is okay to wear tights at leggings! The sassy singer hit the town in London, wearing her nylons with a white sweater and Nicholas Kirkwood heels.