formal royal blue dresses for women Plunging Neck Sweep Train Lace Prom Dress Royal Blue / 10 classic blue V Neck 2 Pieces Royal

The singer performed at the Griffith Observatory in Los Angeles, California, for the CBS special, "Adele One Night Only," which aired on Sunday

The v-shaped cut at the back echoes the deep v design at the front, which is elegant and sexy

I dont think I experienced what most people call stuffing until maybe high school (at the earliest)

The underslip makes it flowy and feminine

Hard to believe, but it's been 16 years since the internet erupted in fierce debate over whether a certain dress was blue and black or white and gold

Boasting a twisted asymmetric neckline, style this stand-out staple with a tousled bun and some gold accents for a classic look