Julia Roberts' Paris appearance makes balloon trousers the season's must‑have, and M&S offers three budget‑friendly versions to match the look.
When the Oscar-winning actress was spotted strolling through the streets of Paris this autumn her outfit caused a ripple across fashion feeds. She paired a pleated balloon trouser with a knit polo, an oversized wool blazer and navy trainers, proving that comfort can coexist with elegance.
The silhouette – a leg that swells then tapers toward the ankle – offers a fresh alternative to the denim staples that have ruled wardrobes for years. Industry analysts flag the balloon trousers as one of the defining looks for the autumn/winter 2026 season, and retailers have rushed to provide ready-made versions.
Why balloon trousers are stealing the spotlight
The key to the trend lies in its geometry. Unlike classic wide-leg pants, balloon trousers create a curved, volumetric shape that adds visual interest without sacrificing ease of movement. The extra room in the thigh and calf delivers a relaxed feel, while the taper at the ankle restores a sense of proportion.
This balance of structure and fluidity makes the piece suitable for both daytime errands and evening gatherings. Designers emphasize the silhouette’s ability to flatter a range of body types, noting that the high waist draws the eye upward and the ankle-level finish elongates the leg.
Marks & Spencer’s three ways to wear the trend
Recognising the buzz, M&S introduced three distinct versions that cover everyday practicality, refined tailoring, and festive glamour. All three are available through the retailer’s online catalogue and vary in price, material composition and detailing.
1. Relaxed Balloon Trousers – £28
Positioned as the entry-level option, these black trousers belong to the M&S Collection line. They feature a mid-rise waist, zip closure and a stretchy fabric blend that promises comfort throughout the day. The cut provides the classic balloon shape while remaining slim enough to pair with a variety of tops. Styling suggestions include a patterned knit shirt, an oversized blazer and trainers for a casual vibe, or a crisp white shirt and loafers for a smart-casual office look. The range comes in short, petite and long lengths, ensuring a fit for most shoppers.
2. Wool-Blend Tailored Balloon Trousers – £90
For those seeking a more polished aesthetic, the Autograph line offers a dark-grey, high-waist model crafted from a mix of 52% new wool, 46% polyester and 2% elastane. The fabric includes a soft lining and elasticised elements for movement, while the sculptural balloon leg and tapered cuff create a modern silhouette. A hook-bar and zip fastening keep the front sleek. Pair these with a fine-knit jumper and an oversized blazer for a business-casual ensemble, or switch to a fitted top and heeled boots for an evening out.
3. Velvet Elasticated Waist Balloon Trousers – £99
The most indulgent choice arrives in a lustrous black velvet, featuring an elasticated mid-rise waist and side-seam pockets. The fabric’s sheen elevates the balloon cut, rendering it suitable for holiday parties or dinner events where denim feels too informal. The full-length hem rests at the ankle, and the unlined construction adds a soft drape. Style the trousers with a simple black blouse and pointed-toe heels for an elegant look, or balance the dressiness with a fine-knit jumper and low-key trainers.
How to style balloon trousers for every occasion
Because the silhouette already makes a statement, keeping the remaining pieces relatively simple is advisable. A classic knit top, whether a polo or a lightweight sweater, supplies texture without competing with the trousers. Adding an oversized blazer – as Julia Roberts did – injects structure and creates a balanced silhouette. Footwear acts as the final tone-setter: trainers lend a laid-back, street-style feel; loafers or ankle boots polish the outfit for work; and heeled shoes provide contrast that highlights the volume of the leg during evenings out. Experiment with tucked-in shirts or cropped jackets to accentuate the waist, and remember that the balloon cut works equally well in black, grey or velvet for seasonal versatility.
