These days, it seems that Jessica Alba [1] does it all: actress, mother, CEO, Taylor Swift squad member [2] — the list goes on. She's also a master when it comes to power dressing [3], and in the latest issue of Net-a-Porter.com's The Edit, she puts her cozy-cool looks on display.

The classic — and nonstuffy! — piece she's convincing us to reconsider? The sweater dress. Scroll through to see how the star manages to perfectly pull off two different options, then read all about the challenges she's faced [4] when launching her business The Honest Company.

Who knew a sweater dress could look this sexy? We're loving the one-shouldered Stella McCartney design.

The businesswoman showed some leg — and gave us a bit of Winter outfit inspiration — in a Helmut Lang dress. This may be the key to feeling cozy and looking fierce at the office.