Christina AguileraChristina Aguilera faced a maelstrom of criticism after she performed wearing a skimpy black leotard, fishnet tights, wind blown hair and lacquered-on red lipstick during the "Michael Forever" tribute concert in August.
Nicki MinajNicki Minaj looked like she dressed herself in everything but the kitchen sink (and maybe even items from the kitchen sink) for the launch of Versace for H&M.
Rob JonesRob Jones, art director, The White Stripes poses with his award for best boxed or special limited edition package for the white stripes album titled "Under Great White Northern Lights" at the 53rd annual Grammy Awards in Los Angeles, California February 13, 2011. What he certainly did not win was an award for is this salmon-colored pleather suit.
SnookiSnooki knows how to take things to the extreme. Extreme hair, extreme make-up, extreme nails and extreme jewelry make this "Jersey Shore" alum stand out on any boardwalk. Vogue worthy? Not so much. Here she poses on arrival on the red carpet at the MTV Europe Music Awards show in Belfast.
Helena Bonham CarterActress Helena Bonham Carter arrives for the world premiere of "Harry Potter and the Deathly Hallows - Part 2" in Trafalgar Square in central London wearing an unsightly rose-hat on her head and a very ill-fitting dress.
Lady GagaLady Gaga is idolized for her uniqueness and uncanny vision, but sometimes she just leaves people asking "Um.. what?" Here she performs at the MTV Europe Music Awards show in Belfast dressed like a hermit crab.
Tyra BanksNeon horizontal stripes do not work on anyone, not even this former Victoria's Secret model. Here, model and television personality Tyra Banks arrives at the Do Something Awards in Los Angeles, California August 14, 2011.
Lindsay LohanHandcuffs will always land you on the "Worst Dressed" list as they are the most unflattering of accessories. Here actress Lindsay Lohan is cuffed after a judge revoked her probation for failing to appear at a series of community service appointments at the Downtown Women's Shelter at Airport Branch Courthouse in Los Angeles in October.
Alejandra GuzmanMexican rock singer and actress Alejandra Guzman arrives at the 12th annual Latin Grammy Awards in Las Vegas wearing some very interesting attire. The only thing that tops it is her pose.
Katy PerryKaty Perry seemed to channel her inner alien diva while performing at the 2011 American Music Awards in Los Angeles on Nov. 20. The spacesuit dress and retro curled hair do not make for Perry's best look.
Ke$haKe$ha has never been one to dominate any "Best Dressed" list. Here the songstress rocks a wacky ensemble complete with army boots, neon paint and teased hair.
Christina AguileraChristina Aguilera was a repeat offender in 2011. She wore this too-tight Herve Leger bandage dress while performing at the 2011 American Music Awards.
RihannaWe love Rihanna's style. She is edgy, fierce and usually sports some of the coolest ensembles around. But at the 2011 Grammy Awards in Feb. the beautiful singer missed the mark in this Jean Paul Gaultier gown.
Justin BieberJustin Bieber performed with LMFAO in November 2011 wearing this sleeveless tank and yellow zebra print pants. Bieber was a repeat offender this year. At the 63rd Bambi media awards ceremony in Wiesbaden that same month he hit the red carpet wearing an outfit that could have gotten him mistaken for the Michelin Man.
Kelly ClarksonKelly Clarkson performed at the 2011 American Music Awards in November wearing a very ill-fitting Jessica Rabbit red gown.
Marisa TomeiMarisa Tomei arrives at the 83rd Academy Awards in Hollywood, California, February 27, 2011 wearing what looks like a 1980s prom dress.
New Year's Eve is quickly approaching and it is almost time to say goodbye to 2011.
Some major events happened this year. Kate Middleton married Prince William. Charlie Sheen shared the secret of his tiger blood. Donald Trump almost ran for president. People were photographed planking around the world. Kim Kardashian spent millions of dollars on her wedding only to get divorced 72 days later. Lindsay Lohan went to jail (again). The world's largest insect was found. And Courtney Stodden became a household name.
This year was also rife with some wild and wacky fashions. Some looks were weird and others were just plain awful.
From Rihanna's tinsel gown at the 2011 Grammy Awards to Snooki's big hair to Christina Aguilera's too-tight ensembles, 2011 surely landed some celebrities on the Worst Dressed list.
Fashion is, of course, about taking risks. What seems like a muddled mess to one person may seem like a masterpiece to another.
Beauty might be in the eye of the beholder, but it is still fun to look back and ask What were they thinking?
Check out the slideshow of the worst and wackiest celebrity fashions from 2011.