Katy Perry vs. Rachel Bilson: Who wore cobalt blue best on the red carpet?

See the cobalt blue looks up close »

While summer cocktails keep us cool on the almost dog days of summer, cobalt blue trend is doing the same on the red carpet. The intoxicating shade has become quite a favourite this year, with Reese Witherspoon, Taylor Swift and Jessica Chastain counted amongst its A-list fans.

Conveniently for Katy Perry, cobalt blue also happens to be the favourite shade of The Smurfs, whose second animated film Smurfs 2 co-stars the singer herself. To promote the film, Perry’s been wearing nothing but the shade, which we think is pretty awesome. Dressed in head-toe-blue at the Los Angeles premiere over the weekend, Perry wore a dress by Tadashi Shoji from the Fall 2013 collection. With floral appliques on the bodice, the sleeveless dress also features a small bow belt and leather pleated skirt that falls past the knees. Matching her outfit, the songstress adds a pair of blue heels with a black bow accent by Pedro Garcia and sapphire crystal earrings by Swarovski. She finished off her look with pink lips, a matching pink manicure and with her hair styled in classic sixties waves.

At last night’s CW, CBS and Showtime Television Critics Association (TCA) summer party in Los Angeles, actress Rachel Bilson took the cobalt blue trend to the next level in a little white dress by 3.1 Phillip Lim which featured glittering sequin detail in green, turquoise as well as of course, cobalt blue. The Heart of Dixie star showed off her toned legs by pairing the sleeveless dress with silver metallic peep toe platform heels by Brian Atwood. On the beauty front, Bilson kept it simple, with hair in a middle-part low ponytail, a subtle smoky eye, glossy neutral lips and navy blue manicure to match her outfit.

So, who did summer 2013’s cobalt blue trend best? Vote in our poll!

Photography by Jon Kopaloff/FilmMagic

Photography by Gregg DeGuire/WireImage

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Katy Perry Smurfs 2 Premiere Tadashi Shoji Dress

Dressed in head-toe-blue at the Los Angeles premiere over the weekend, Katy Perry wore a dress by Tadashi Shoji from the Fall 2013 collection. She accessorized with a pair of blue heels with a black bow accent by Pedro Garcia and sapphire crystal earrings by Swarovski.

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Rachel Bilson Phillip Lim TCA Summer Party

Rachel Bilson wore a little white dress by 3.1 Phillip Lim which featured glittering sequin detail in green, turquoise as well as of course, cobalt blue. She paired the sleeveless dress with silver metallic peep toe platform heels by Brian Atwood.

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