Amazon shoppers keep raving about the Briggs New York pull-on dress pants, which are on sale for just $22. The stretchy and comfortable straight-leg pants have an elastic waistband and can be worn ...

A second shopper said they “look dressy but feel like my PJs.” If you opt for the black pair, you can easily dress it up with a printed blouse and heels, or down with a T-shirt and sneakers.

And if you want to up the elegance even more, wear a pair of ballet flats (or Mary Janes) as Robbie did—but they're really not needed, as a cardigan makes even leggings and sneakers look rich.