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Cara Delevingne - The supermodel sported a hoodie at Bibliotheque Nationale de France last year.

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Lil Uzi Vert - The Grammy-nominated rapper rocked a casual gothic look at the Grammy Awards.

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Mark Wahlberg - Wahlberg is a formidable actor, but dresses pretty informal for an A-List star.

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Michael B. Jordan - The Hollywood heartthrob kept things cool at this Cannes appearance.

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Robert Downey Jr. - Downey dressed down for this Academy Members Screening of 'The Judge.'

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Selena Gomez - Gomez rocked a dressed-down look at the 2016 Met Gala.

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Ed Sheeran - The singer-songwriter has always dressed down, like this look at a concert in Los Angeles, California.

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Idris Elba - The British actor is something of a style icon, but dressed down for this movie photocall.

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Sarah Silverman - The whip-smart comedian dressed down for this event at the Hollywood Palladium.

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Zoë Kravitz - The starlet sports a blouse-and-jeans combo at a Saint Laurent show in Paris.

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Emma Roberts - Earlier this year, Roberts wore this simplistic outfit during a premiere at Sundance Film Festival.

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Kevin Hart - The A-list stand-up kept things cool at The Colosseum at Caesars Palace in 2016.

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Kate Bosworth - This actress has always had a stripped-down style. Here she is at a New York Fashion Week event.

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Erykah Badu - This singer is normally known for her eccentric outfits, but looked calm and collected at the BET Awards in 2013.

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Chloë Sevigny - Sevigny is one stylish woman. Here, she wears casual clothing at Sundance events.

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Ashley Tisdale - At this New York Fashion Week show, the American actress rocked a stylish fringe top with brown skinny jeans.

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Thandie Newton - Newton knew what to do when dressing for this Calvin Klein event. 

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Tyra Banks - Banks is a fashion icon, but kept things casual for this appearance at the Nasdaq Entrepreneurial Center in America.

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Wanda Sykes - The comedian and writer rocked a casual outfit at The Broad Stage earlier this year.

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Donald Glover - Glover has worn some eccentric outfits, but was an understated hunk at this event in Beverly Hills.

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Dave Chappelle - For this appearance at the Toronto International Film Festival, Chappelle slipped on a leather jacket over a tee shirt.

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Tom Brady - Brady (right), an American Football star, didn’t dress up for this prestigious press conference.

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Tracee Ellis Ross - Ross cracks a smile at Walt Disney Studios, wearing a slick, casual fit.

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Chrissy Teigen - The model and author made an understated appearance in Houston, Texas.

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Jada Pinkett Smith - The prestigious star looked dynamic in denim at this Sundance event.

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Bella Thorne - The rising star rocked a pretty casual look for this appearance in Beverly Hills.

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Jamie Foxx - Foxx found his mojo with this denim shirt, serving a relaxed look.

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Pharrell Williams - Williams (left) is something of a fashion star, but often keeps things casual, like when he wore this outfit to the Met Gala.

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Daniel Day-Lewis - The formidable actor played a fashion designer in ‘Phantom Thread,’ but wore casual outfits while promoting it.

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Jeff Goldblum - For this ‘Isle of Dogs’ screening, Goldblum showcased his smart casual style.

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