What else would you wear to sit front row at Ralph Lauren but a classic, preppy inspired ensemble like the one Janet Jackson wore to the designer's most recent fashion show in NYC.

To make your fall shopping a little easier, a quick search at the visual shopping site Like.com yielded look-alikes for Jackson's cardi, shirt, pencil skirt, belt and shoes. And that simple gray cardigan can be one of the most versatile items in your closet, if you work it right.

For ideas, check out my new celebrity-inspired 7 Ways To Wear a Cardi lookbook.

All Photos: Getty Images