Rita Ora's Must Haves: From Her Favorite Water Bottle to a $7 Lavender Mist

Lastly, Ora — along with many other celebrities we've interviewed — loves Slip. In particular, she swears by the Slip 'Welcome Aboard' Contour Sleep Mask ($66), which is specifically designed to sit away from your eyes (and eyelashes). "I travel so much, I really want a sense of home in every hotel room . . . an eye mask — it's just such a cozy thing to have on your face," she says. Made of 100 percent silk, you can count on it to feel incredibly comfortable, too.