Grace Na is the founder of Pistola, a Los Angeles–based womenswear and denim brand. Since its creation in 2013, Pistola has become a go-to destination for reasonably priced, trendy, high-quality denim styles—including a few viral hits, like the pink denim jumpsuit Greta Gerwig wore while directing the Barbie movie. This week, Grace joins Who What Wear Shopping Director Bobby Schuessler to discuss how she uses data to guide her design process, her best styling tips for different denim silhouettes, and her thoughts on modern skinny jeans.

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