Kate Middleton in black track jacket, black pants and grey sneakers on October 31

Kate Middleton Duchess of Cambridge at National Tennis Centre on October 31 2017

WHAT SHE WORE: Kate wore black track jacket from Play Brave, black side stripe sweatpants from Monreal London and light grey Nike sneakers

BUY:

JACKET: PLAY BRAVE CLARICE TRACK JACKET

PANTS: MONREAL LONDON TUXEDO TRACK PANTS

SNEAKERS: NIKE AIR VAPORMAX FLYKNIT SNEAKERS