Best Dressed of the Week: Katy Perry, Blake Lively and More

Katy Perry tried out Old Hollywood glam in a luxe velvet number by Dolce & Gabbana for her "Part of Me" premiere.

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","id":"2132386","thumbnail_url":"https://nbcots.go-vip.co/wp-content/uploads/2019/09/bestdressedlivelyperrythumb.jpg?fit=722%2C406","type":"image","focusedSlide":""},{"caption":"At the Hollywood premiere of her biopic, "Part of Me," Katy Perry worked a classic glam look, pairing a velvet boustier Dolce & Gabbana dress with curled violet locks and a Judith Lieber clutch.
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Selena Gomez looked every bit the teen queen at the premiere of "Part of Me" in a feathery pink creation by Pucci and gold cage Jimmy Choo heels.
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Model Camila McConaughey—formerly Alves—hit the premiere of "Magic Mike" clad in a sparkly tiger-stripe Pucci mini dress and black Casadei sandals.
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Also at "Magic Mike," a radiant Olivia Munn styled a sleek black Dolce & Gabbana column dress with gold hoop earrings and a giant geometric cocktail ring.
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While promoting her forray into the "Spiderman" franchise, a platinum blonde Emma Stone sported a cool violet button-down dress and nude patent pumps for a visit to the Empire State Building.
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Later in the week, Stone hit the red carpet clad in a brocade-embroidered Chanel dress with a flouncy pouf skirt and bejeweled silver kitten heels.
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Blake Lively looked edgy and chic for the premiere of "Savages" clad in a sculpted Zuhair Murad couture gown with curly blonde waves and bright red lipstick.
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Also at "Savages," Salma Hayek showed off her curves in an emerald beaded Gucci gown and a slicked-back ponytail.
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We were also keen on the <a href="http://www.nbcnewyork.com/blogs/threadny/Short-Suits-Spring-2012-146253825.html" target="_blank">smart red suit</a> with cropped, ankle-skimming trousers that Lively donned for "Good Morning America" this week.
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For the premiere of "People Like Us," Elizabeth Banks tried a punchy coral and violet printed cocktail dress with matching color-blocked Barbara Bui pumps and bold combalt earrings.
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For "Britian Creates" in London, Florence Welch looked every bit the modern diva in a dramatic black v-neck gown with a sheer silk skirt and elaborate beaded sleeves.
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AlwayKristen Bell looked charming and sophisticated in a silky blue Vanessa Bruno top and floral-print trousers for the GenArt summer screening series.
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Miley Cyrus looked all grown up in Zimmermann's sexy black mini dress with bodice cut-outs for the Australians In Film Breakthrough Awards.
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Headed to Elton John's White Tie & Tiara Ball, Naomi Watts looked radiant in a frothy white Marchesa creation with a gold embroidered bodice and matching white pillbox clutch.
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Understated and elegant, Rose Byrne knocked it out of the park in head-to-toe Valentino, including an <a href="http://www.nbcnewyork.com/blogs/threadny/THREAD-Crisp-White-Looks-for-Memorial-Day-153114035.html" target="_blank">all-white </a> sheath dress and embellished pumps, for premiere of Damages Season 5.
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