From Beyonce to Rihanna, the 11 Best Fashion Instagrams

Beyonce sports a Tom Ford "knock-off of a knock-off," Rihanna celebrates her birthday in Ass-pen, and Lupita Nyong'o reads in a ballgown. Plus, more of this week's best fashion instagrams.

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Seeing double! Cara Delevingne cozies up to Karl Lagerfeld and his Fendi Buggy friend backstage at Milan Fashion Week. #TWINS.

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Models can read, too, Chrissy Teigen says.

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Queen B pulls her look straight from the catwalk, rocking a furry 'Picasso Baby' "knock-off of a knock-off" by Tom Ford.

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TTH has scored the perfect red 'do. Gwyneth agrees.

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Welcome to Ass-pen. Bad gal Ri-Ri rings in the big 2-6 by hitting the slopes. #CabinLife.

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The model-off-duty look is giving Elle UK major #shoeenvy, especially when they trade six-inch stilettos for Chanel trainers.

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Model Jourdan Dunn practices her smize with LOVE magazine's Katie Grand's pet rabbit, Clara. #TwoPeasInAPod.

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Net-a-Porter founder Natalie Massenet celebrates PORTER at the Palazzo.

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Model Lara Mullen dons her best Chanel-box hat. Warning: new trend alert!

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There's nothing like a Nicole Richie/Britney Spears selfie to really get the party started.

From Beyonce to Rihanna, the 11 Best Fashion Instagrams

Beyonce sports a Tom Ford "knock-off of a knock-off," Rihanna celebrates her bday in Ass-pen, and Lupita Nyong'o reads in a ballgown. Plus, more of this week's best fashion instagrams.

The Fashion Beast Team