1 CITIZENS OF HUMANITY Penny Lovell, whose clients include Anne Hathaway and Rose Byrne, favors the Corey Slouchy jean, a slimmed boyfriend fit; $328, citizensofhumanity.com
2 MOTHER “I do not live in jeans, but when I wear denim, it’s Mother!” says Cate Blanchett’s stylist Elizabeth Stewart. The Runaway in Clean Sweep (with Lycra for stretch); $198, motherdenim.com
3 AMO “I love my AMO Babe jeans,” says Kate Young, who dresses Natalie Portman and Sienna Miller. Babe in ’70s Blue; $253, at The Line, theline.com
4 R13 Jennifer Lopez’s pro Mariel Haenn, half of the styling duo Rob & Mariel, wears R13’s angled fly for something avant-garde. X-Over in Dark Vintage; $395, at Barneys New York
5 INDUSTRY STANDARD “The fit and comfort make them wearable for work and play,” says…