The shawl collar -- traditionally the most formal lapel -- is killing it tonight. (Jay L. Clendenin / Los Angeles Times; right: Kevork Djansezian / Getty Images)
Benedict Cumberbatch shows how the white tux jacket is done. (Christopher Polk / Getty Images)
For the men, little things like the lapel choice stand out, like Adam Levine in an Armani two-button wool/cashmere tux with a shawl collar. (Christopher Polk / Getty Images)
“Birdman” nominee Michael Keaton sports a classic tux for the Oscars on Feb. 22, 2015. (Jordan Strauss / Invision / Associated Press)
Kevin Hart in a white tux at the Dolby Theatre in Los Angeles for the Oscars. (Jordan Strauss / Invision / Associated Press)
Steve Carell, with Nancy Carell, donned a Brunello Cucinelli tux. (Jordan Strauss / Invision / Associated Press)
“Selma” star David Oyelowo chose a red Dolce & Gabbana tux for the 2015 Oscars. (Jason Merritt / Getty Images)
Rapper-actor Common opts for a Prada tuxedo jacket. (Jason Merritt / Getty Images)
“Guardians of the Galaxy” star Chris Pratt arrives at the Oscars. (Jordan Strauss / Invision / AP)
“American Sniper” star Bradley Cooper at the 2015 Oscars. (Jason Merritt / Getty Images)
“Boyhood” director Richard Linklater, left, and star Ethan Hawke on the red carpet. (Jason Merritt / Getty Images)
Host Neil Patrick Harris, right, and husband David Burtka arrive at the the 2015 Oscars. (Frazer Harrison / Getty Images)
