Emma wore a one-sleeve Ralph Lauren dress to the Met Gala, while Kendall showed off shoulder (and thigh) in Halston Heritage and Alexa rocked a bohemian version.

The key to looking effortlessly modern and elegant? Peekaboo shoulders. Celebrities like Emma Roberts, Kendall Jenner and British TV presenter Alexa Chung have all adopted the cold-shoulder trend with dramatic cut-outs, asymmetrical silhouettes and bold drop-shoulder details. This slinky effect looks best with pared-down hair and a bold statement clutch to keep the focus on your upper arms.

How to get the look:

1. Topshop scallop Bardot top, $16, topshop.com
2. Emilio Pucci Gazelle print silk-gauze kaftan, $1,715, net-a-porter.com
3. Tanya Taylor Kathy dress, $925, tanyataylor.com
4. Suno printed silk dress, $720, sunony.com
5. BCBGMaxAzria Breanne print peasant dress, $423, bcbg.com
6. Rebecca Taylor Ponte dress, $417, rebeccataylor.com