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Just last night at the 67th Annual Grammy Awards Pre-Grammy Gala, the "Marry Me" singer wore a backless LaPointe dress with a naval-gazing plunge neckline

There are a ton of rules about what not to wear to a wedding, so we created an outline, below, that youll want to consider before you shop

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Elegant white graduation dress featuring soft satin and delicate lace

Free People Onda Drop-Waist Tube Midi I own this, and it's truly the easiest warm-weather staple to style up or down all season long

Following the ceremony, the first-time winner joined her Emilia Prez costars and fellow actors at Netflixs after-party, held at celebrity-loved restaurant Spago in Beverly Hills