A picnic blanket gown, a McDonalds-inspired get-up and a colorful quilt -- stars are rocking all the wrong trends this week!

Rashida Jones landed on our toodrab list for wearing this busy, colorful quilt to the Vanity Fair Oscar Party.

Not only is this look way too covered-up for the "Parks and Recreation" star, but the fabric looks like something we'd find in the American Folklore Museum.

Rihanna raised a few eyebrows outside the Miu Miu show during Paris Fashion Week, donning a very loud red, yellow and black fur coat and black thigh-high stockings. Doesn't her wacky ensemble make you crave french fries from McDonalds!?

And, Nikki Reed caught everyone's attention on the red carpet at Elton John's Oscar Viewing Party on Sunday night -- and not in a good way.

This Naeem Khan frock looks like a picnic blanket, not something chic enough to wear at the hottest party in Hollywood! The plunging neckline is sexy, but the dress is not fancy enough for an Oscar soiree. 

But they weren't alone -- see more of this week's worst dressed stars in the gallery above!