This is not a drill! Amazon's Prime Big Deal Days event is happening again this year - but you don't have to wait until October 7 and 8 to shop popular fashion. That's because Amazon's massive Deals section is overflowing with rich mom dresses, and I found the best deals so you don't have to. Whether you're running errands or leading a boardroom meeting, these 17 pretty on-sale dresses will have you turning heads without even trying. Polished and sleek, they're the easiest way to look like a millionaire this fall, which is why I'm adding them to the list. Even better, these Amazon options start at just $15! The best picks are selling out as I write, so don't wait to grab your new favorite outfit. 17 Rich Mom Dress Deals I'm Grabbing Before October Prime Day 1. Everyday Staple: Smooth, stretchy and perfect for fall, this simple T-shirt maxi checks every box and more - was $40, now $31! 2. Flower Girl: Channel Hamptons boutique energy in this black and white floral number that pairs perfectly with flats - was $45, now $35! 3. Wine and Dine: Everything about this fuzzy sweater dress is chic, including the body-skimming fit and classy high neckline - was $50, now $35! 4. Wedding Guest: Be careful . . . you might steal the show in this flutter-sleeve maxi enhanced with Swiss dots and smocking where it counts - was $52, now $36! 5. Elevated Tee: Swap sweats for this comfy errand dress that makes you look effortlessly put together, even on busy mornings - was $27, now $15! 13 Early Apple Deals Ahead of Amazon's Prime Big Deal Days - See Them 6. Miss Fall: This drapey, tummy-hiding maxi dresses up or down with a quick change of shoes, so we won't be surprised if you wear it every day - was $40, now $20! 7. Zimmermann Appeal: Love the floral things in life? This printed waist-cinching mini should cost hundreds (but doesn't) - was $40, now $31! 8. Nearly 50% Off: Own fall fashion with this knee-length dress that has a ribbed design to secretly lengthen the torso - was $37, now $20! 9. On Repeat: We're wearing this timeless button-front maxi at least once a week. The tiered skirt adds an elevated flair - was $49, now $34! 10. Must-Have Midi: Simple in design, this long-sleeve dress is a blank canvas for all of your favorite accessories - was $35, now $20! 11. Office-Friendly: Look like a CEO in this printed short-sleeve maxi that even flatters the bust thanks to a faux wrap design - was $43, now $28! 12. Hourglass Figure: Finally, a bodycon dress that slims, smoothes and hugs only where you want it to - was $38, now $20! 13. Modest Maven: Take up to 55% off this midi dress that you'll wear to work, church and everywhere in between - was $38, now $17! 14. Print Princess: This playful lantern-sleeve wonder is the easiest way to look like a Hamptons resident - was $50, now $36! 15. Holiday-Ready: The holidays will creep up, so be prepared with this elegant textured maxi that's perfect for gatherings - was $55, now $36! 16. Laid-Back Luxury: Turn heads at every orchard in this turtleneck-style midi that's stretchier than loungewear - was $36, now $23! 17. The Bees Knees: Upgrade your out-to-dinner wardrobe with this knee-length dress that begs to be worn with loafers - was $46, now $27! Run! These 18 Fall Rich Mom Tops Are Over 50% Off on Amazon - From Just $5 Us Weekly has affiliate partnerships. We receive compensation when you click on a link and make a purchase. Learn more!