We caught up with the Made in Chelsea starlet as she hung out with sisters Lucy Watson and Tiffany Watson at the fancy bash to celebrate John Frieda's new hair campaign.
Stephanie's LBD suited her down to a tee but it was the star's make-up that really won us over. Flawless, nude and glowy was the order of the night.
'I stick with the same make-up staples all the time. I love Nars and Giorgio Armani products but my favourite mascara is Max Factor Clump Defy Volumising Mascara, £10.99, and I'm wearing an Avon eyeliner,' Stephanie told us.
With her clean, simple eye look (paired with her mega lashes!) we reckon the star could be wearing Avon Glimmerstick Diamonds Eyeliner in Black Ice, £6.
What do you think of Stephanie's latest look? Tell us below as the best comment from across the site each week wins £50!
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