BEST: Justin Bieber supported his gal pal Selena Gomez, dressing up in
shades of grey.

WACKY: Leave it to Katy Perry to sass up the red carpet! The girly girl
sported a Jeremy Scott one-shoulder dress with a very “Pink Lady” leather
jacket, smiley face earrings, ankle socks and Jeremy Scott heeled saddle
shoes.

WACKY: Lady Gaga upped the bizarre beauty ante, covering her eye brows in
glitter and rocking blue lipstick.

WACKY: Lady Gaga sported an intricately designed Paco Rabanne gown, which showed off her black panties.

BEST: Irina Shayk showed off her supermodel bod in a slitty Replay gown,
which featured a sexy, cutout back.

BEST: Jessie J. went wild in a Dolce & Gabbana strapless.

BEST: Selena Gomez showed off her superior stems, wearing a Marchesa tulle
top as a dress. She paired the sexy and elaborately styled number with
Casadei embellished peep-toes.

WACKY: Red Foo and SkyBlu of LMFAO went over the top with their attention
grabbing attire. While SkyBlu was spiked to the max, Red Foo donned every
type of animal print possible.

WORST: Snooki brought her Jersey Shore style to Belfast, wearing an awful
embellished mini dress with sparkling heels.

BEST: Bar Refaeli flaunted her fabulous figure in an uber mini Replay
number, which featured an attached, cascading train in shades of blue.

WORST: It wasn’t Hayden Panettiere’s Tibi cap-sleeved dress or her Christian
Louboutin heels that we had a problem with – it was her hair!

BEST: David Guetta added a little bit of wild to his rock and roll look.

WORST: Louise Roe’s 1970’s hippy look may have worked during the summer
months, but not during November in Europe!

WORST: David Hasselhoff looked almost unrecognizable.

WORST: Amy Lee had a bad plaid attack, wearing an unflattering frock with
slouchy boots.