For too long, style advice for plus size women has read more like a list of restrictions than inspiration. “No stripes.

If you’ve shopped Walmarts fashion section lately, you know the vibe: cozy sweaters that look designer, jeans that actually fit, and dresses that make you feel like you tried (even if you didn’t).

The Los Angeles-based designer took legal action against the retailer for introducing the Mackie: Bob Mackie collection ...