light blue drop waist dress Qianna Baby Peplum Chiffon Gown M / 6-8 This flirty dress has a woven organza construction (with a textured floral jacquard design throughout) that shapes a sleeveless bodice with seam detailing Lulus | Light Blue Chiffon

Pull tape across the narrowest part and keep tape slightly loose to allow for breathing room

A seersucker suit exudes a relaxed, preppy vibe, making it perfect for summer weddings or outdoor gatherings

The singer, 21, wore a form-fitting sheer black gown in honor of this year's theme: "Karl Lagerfeld: A Line of Beauty." Eilish, whose brother Finneas O'Connell joined her on the red carpet, left her hair in a simple low ponytail while posing in the floral ensemble with matching gloves and vegan Piferi platforms

The actress's intimate rendition of the traditional "Happy Birthday" song, which instantly became one of the most gossiped-about moments in Hollywood history, occurred only three months before her untimely death on 4 August 1962