Jessica Chastain looked as gorgeous as ever in a teal dress while Mad Men star Elisabeth Moss wowed in a white, figure-hugging number paired with black accessories.
However, this was just the warm-up party. The big question is what will these ladies be wearing for the main event on Sunday night? Stay tuned for full red carpet coverage next week and let us know how you rate Miranda and co's lunchtime looks below.
Elisabeth Moss and Jessica Chastain. Photos: Rex Features
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