short blue floral dress ZAPAKA Women Champagne Ruffled Homecoming with Lace Up Back Jacquard Square Neck Tight Cocktail Dress, Light / US4 Size:(UK 8) (US 4) (EU 36) (XS) badge:Final Sale Olivias height is 163cm KissProm Cobalt Blue Plunge

short blue floral dress ZAPAKA Women Champagne Ruffled Homecoming with Lace Up Back Jacquard Square Neck Tight Cocktail Dress, Light / US4 Size:(UK 8) (US 4) (EU 36) (XS) badge:Final Sale Olivias height is 163cm KissProm Cobalt Blue Plunge

KissProm Cobalt Blue Plunge V Bodycon Short Dress with Puff Sleeves, Blue / 0

The model didn't pose with her sister on the red carpet, but she was seen hanging out with Chalamet inside the event

badge:Final Sale

Size:(UK 8) (US 4) (EU 36) (XS)

Your two options would be to create a monochromatic look, or each of the colors be different but still create a beautiful appearance

Olivias height is 163cm / 53 and wears a size AU6/US2.