And it seems that Christina, 31, is the latest US celebrity to be converted to the joys of the UK's high street!
While we were busy admiring Christina's striking aztec print maxi dress and cute sandals, we thought the singer's yellow, red and blue printed frock looked familiar... and our sources have confirmed that it's from British high street brand Wallis' summer 2012 collection!
Along with Beyonce - who is a well known Topshop fan - Christina is one of a host of celebrities from across the pond who love our high street fashion - well, it is the best in the world (if we say so ourselves).
Christina accessorised the flowing maxi with a multi-strand black seed bead statement necklace and a hefty piece of designer arm candy, in the shape of her beloved grey leather Hermes Birkin bag.
We might not be able to afford the designer tote, but at least we know where to go for a made-'em-look maxi like Ms Milian's.
A masterclass in summer style on a budget - thanks very much, Christina!