The Spanish clothing retailer is now based in a newly refurbished store, which was formerly Banana Republic.
Moving from its former premises next door, Zara now has 3,877 square metres devoted to the latest trends and outfits.
The move from its old 2,879 square metre store means that the west London branch is now the UK's biggest Zara.
Zara fans will be delighted to hear the new store is also home to exclusive clothes and accessories that won't be available elsewhere.
On top of the womenswear, menswear and kidswear, an additional crafted accessory section is offering shoppers exclusive products.
West London shoppers will be now able to get their hands on items such as white slingback heels and jewelled duffel bags.
The shopper's paradise is also equipped with a number of new changing rooms and tills, making it ideal for Zara fanatics.
While the new Westfield store is huge, it's still only half the size of the largest Zara in the world.
The branch based in Madrid, which opened earlier this month, is a whopping 6,038 square meters.