If the frequent paparazzi photos are any indication, Olivia Wilde works out a lot. Therefore, she needs many pairs of leggings and surely has a set of criteria for the ones she adds to her collection. I guess you could say I look at photos of celebrities a lot (it's my job) because upon seeing a workout outfit she wore over the weekend, I instantly recognized them as one of celebrities' favorite pairs as of late: ALO Airlift Leggings. (She opted for a pretty plum pair with a teal ALO hoodie and pink Adidas running sneakers.)

Other members of the unofficial ALO Airlift Leggings fan club include Hailey Bieber, Dakota Johnson, Kaia Gerber, Addison Rae, Rita Ora, and Alessandra Ambrosio, so they must be special—and they are. For starters, they come in tons of colors (both seasonal and basic), and they have a pretty sheen to them.

Additionally, these second-skin leggings sculpt and contour like no other and wick away moisture during sweaty workouts. It's no wonder they have nearly five stars and 2.4K reviews on ALO's website.

Keep scrolling to shop Hollywood's favorite ALO leggings for yourself.

On Olivia Wilde: ALO Muse Hoodie ($108) and 7/8 High Waist Airlift Leggings ($128); Adidas Ultraboost 5.0 Sneakers ($119); Chanel sunglasses

Next up, seven key items celebs are wearing with leggings right now.