Natalie Portman delivered a masterclass on comfort-focused fall style during the Toronto Film Festival in September - and we're taking notes! She wore a monochromatic red outfit, pairing a cozy mockneck sweater with a matching mini skirt. The classy sweater is soft and on-trend for fall, so we found an affordable style to recreate her red-hot look for just $27. See it! Available in the same rich shade as Portman's top, this three-quarter-sleeve sweater matches her top's classy and comfortable silhouette. We love the flattering sleeves because they hit at the middle of the arm, subtly concealing underarm jiggle. This sweater also has a mock neckline for an elevated touch that dresses up casual outfits. This relaxed-fit sweater is stretchy and thick. Along with Portman's red hue, this top comes in seven other shades, like light brown, white, black and green. Today Only! The Number-One Bestselling Sweater on Amazon Is Under $28 It's so versatile and chic, reviewers were "quite surprised" that it costs less than $30. "This is the most perfect top for work," one five-star reviewer wrote. "It is a nice solid weight - not thin at all, but not overly thick. It fits perfectly under a blazer but also supports a brooch without sagging. It washes like a dream." Another fan raved, "This little turtleneck shirt has been my new favorite!" A celeb-approved look for less than $30? Sounds like a deal that's too good to pass up. Snag this cozy sweater STAT for a fail-proof autumn wardrobe. See it! See it! Get the Lacozy Short-Sleeve Sweater for just $27 at Amazon! Please note, prices are accurate at the date of publication but are subject to change. Not done shopping? Snag more fall sweaters here and don't forget to check out Amazon's Daily Deals for more great finds. Jessica Alba's Errand-Ready Rich Mom Tote? The Look Is Just $40 on Amazon Us Weekly has affiliate partnerships. We receive compensation when you click on a link and make a purchase. Learn more!