The 31-year-old showed off her enviably slender figure in a sexy but sophisticated blue lace midi dress as she made her glamorous arrival at the star-studded bash.
But if you're keen to get the perfect pink midi like her, why not shop our round up of alternatives below? The video has of course attracted a slew of iffy comments from over-excited fans - but most notable is the fact that the clip has only collected attention now, in 2017.
With the under-layer cutting off in a sweetheart neckline, the semi-sheer material gave a sexy glimpse of her bust by pulling into a high neck over her bare skin.
Rachel went bra-less in an episode of the letters and numbers game-show in 2015, showcasing her stunning figure in a light pink mini-dress.
Just take Rachel here for example looking fabulous in a pretty pink midi dress.
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