Billie Eilish's Spice Girls T-Shirt and Leggings

Billie Eilish goes Y2K for her gym outfit, styling a Spice Girls T-shirt with leggings and moon boots.

Billie Eilish is Spice Girls' biggest fan as she rocks vintage merch for gym session

Billie Eilish makes a bold statement with sultry sheer top and chic matching gloves

Billie Eilish Wholesale Merchandise

Billie Eilish's Latest Playful Outfit Proves That She's a '90s Kid at Heart

Spice Girls Photo T-Shirt I – Spice Girls Official Store

Billie Eilish looks fit as she leaves gym in tight leggings and Spice Girls T-Shirt after workout

12 '90s Fashion Trends That Are Back – Best Nineties Fashion

Billie Eilish Isn't Allowed to Drink Soda

Billie Eilish Doll & Action Figure Set of 2 (Bad Guy & All Good Girls Go To Hell)

Billie Eilish says 'it still hurts my feelings' seeing comments

Billie Eilish Wholesale Merchandise

[Newman, Terry] on . *FREE* shipping on qualifying offers. Billie Eilish: And the Clothes She Wears

Billie Eilish: And the Clothes She Wears

Dear Fashion Writers, Please Credit The Black Style Icons Who Inspired Billie Eilish's Look