Looking to expand your jeans collection for fall? Heed the advice below from Joyce Lee (head designer for Madewell), touching on everything from essential pieces to mixing denims. Then, consider attending Madewell’s “Make Your Jeans Dreams Come True” event, September, 14, from 6 to 9 p.m. in their Greenwich, Westport and White Plains stores. Shop their fall collection, including the two-tone Cruiser Straight jeans ($145, pictured on Bedford resident Kate Mara), available for one-night only.

What would you pair with the Cruiser Straights for the best look? The Cruiser Straight jeans are so versatile. I love pairing them with just a tee shirt or an easy top that’s half tucked in for a more relaxed look. They are also a great layering base for under a tunic or a dress, paired back to an ankle boot—a great weekend or work look, for those who can wear jeans to the office!

Which style jeans should every woman have in her closet? I make sure to always have a few key styles of cuts and colors in my closet to play around with. A few of my favorites I keep handy are a high rise skinny, a wide leg crop, and a great vintage inspired pair, like the perfect summer straight leg.

If you’re ready to try a new cut/fit, which is the most on-trend this season? I’ve been living in the Retro cropped Bootleg and Demi boot.

What’s the biggest mistake people make when trying to mix denim? I think it’s easy to get hung up on the idea that you need to match them, but playing with different levels of denim shades makes it look more intentional, interesting and less like you’re trying too hard.

Which denim items do you have that go from day to night best? Black is usually my go-to denim when transitioning from day to night, and I will swap my accessories to make it feel more dressed up for the evening.