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Michelle Monaghan, Lea Michele, Rachel McAdams

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This just in: Your summer wardrobe isn't complete if you don't own an engine red blazer.

Just ask some of Hollywood's hottest leading ladies, who have been spotted out at red carpet events in chic incarnations of the plunging crimson jacket. Rachel McAdams notably donned the look at the 2015 ESPYs on July 15, sporting a trim Cristiano Burani tuxedo alongside date (and Southpaw co-star Jake Gyllenhaal).

Lea Michele wore a flirtier version of the get-up just four days earlier, attending a 2015 Comic-Con party hosted by Entertainment Weekly in a Zuhair Murad shorts suit that we're sure set more than a few tongues wagging. (We drooled over her matching satin sandals, too!)

Also in the shorts suit realm, Michelle Monaghan wowed in Zac Posen at an event for the film Pixels on July 20, proving that a simple red blazer with no shirt underneath can make for the most eye-catching look of the night.

What do you think of this red-hot blazer trend?
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