Celebrity style: blue ensembles Style blue, celebrity style, fashion Nina Dobrev at the 35th annual CFDA Fashion Awards at the Brooklyn Museum in New York City on June 4, 2018. (Photo courtesy of BFA) Diane Lane at the 35th annual CFDA Fashion Awards at the Brooklyn Museum in New York City on June 4, 2018. (Photo courtesy of BFA) Emily Blunt at the SXSW premiere of “A Quiet Place” at Paramount Theatre in Austin, Texas, on March 9, 2018 in Austin, Texas. (Photo by Rick Kern/Getty Images for Paramount Pictures) Nicole Kidman at the 90th Annual Academy Awards at the Dolby Theatre in Los Angeles on March 4, 2018. (Photo by Rick Rowell/ABC) Jennifer Garner at the 90th Annual Academy Awards at the Dolby Theatre in Los Angeles on March 4, 2018. (Photo by Michael Baker/A.M.P.A.S.) Helen Mirren at the 90th Annual Academy Awards at the Dolby Theatre in Los Angeles on March 4, 2018. (Photo by Rick Rowell/ABC) Kelly Marie Tran at the 90th Annual Academy Awards at the Dolby Theatre in Los Angeles on March 4, 2018. (Photo by Rick Rowell/ABC) Emily Blunt at the 90th Annual Academy Awards at the Dolby Theatre in Los Angeles on March 4, 2018. (Photo by Rick Rowell/ABC) Jolely Richardson at the New York City premiere of “Red Sparrow” at Alice Tully Hall on February 26, 2018. (Photo by Dave Allocca/Starpix_ Joel Edgerton at the world premiere of “Red Sparrow” at Leicester Square in London on February 19, 2018. (Photo by James Gillham/StillMoving.net) Big Sean at the 60th Annual Grammy Awards, at Madison Square Garden in New York City, on January 28, 2018. (Photo by Jeff Neira/CBS)