Lili Reinhart Is Taking Rom-Com Dressing To A New Level With The Love Hypothesis Press Looks

As the star of Prime Video's 2026 rom-com "The Love Hypothesis," Lili Reinhart has embraced having fun with fashion throughout the film's promotional tour. In fact, what Reinhart has done with her wardrobe throughout August and September 2026 has certainly raised the bar for press looks. Stars like Margot Robbie and Zendaya have introduced us to method dressing, the thematic red carpet trend we want to see even more of, but Reinhart gave us something new.

Instead of drawing inspiration solely from her on-screen character, Reinhart recreated plenty of iconic fashion moments from romance and comedy films like "13 Going on 30" and "How to Lose a Guy in 10 Days." "Lili will be paying homage to the leading ladies of the Golden Age of rom-coms and romance films throughout the press tour," her stylist, Ib Abdel Nasser, shared with Elle ahead of the press tour. In between, the actor wore stunning looks reminiscent of fashion that was popular in the late '90s and early aughts. While the film already had a strong fanbase thanks to the success of Ali Hazelwood's novel of the same name, there is no denying that Reinhart's deliberate fashion choices drew even more attention to the film that premieres on September 23, 2026.

In September 2026, Lili Reinhart showed up to a screening of "The Love Hypothesis" in London, England, in a breathtaking purple and blue statement number. The 2001 spaghetti-strap maxi dress by Emanuel Ungaro featured embellishments and dangly pearls, creating a mesmerizing look. To ensure the dress is the focal point of her look, Reinhart stuck to minimal makeup and hair styled in loose waves.

When it comes to the most iconic on-screen dress moments of all time, Kate Hudson quickly comes to mind. Everyone loves the the silky butter yellow Carolina Herrera dress she wore in "How to Lose a Guy in 10 Days."

In September 2026, Lili Reinhart recreated the iconic look for Instagram by wearing an early-aughts dress by Caché. Paired with a loose updo and a sassy caption that references the movie, the look was instantly recognizable.

For the New York City premiere of "The Love Hypothesis" in September 2026, Lili Reinhart rocked yet another fun early aughts look. This time, the actor wore a fairy-like Elie Saab gown from 2004, a pink design with green, leaf-like embroidery throughout. The flowy silhouette added plenty of movement while the corset-like bodice enhanced Reinhart's toned figure. Pink blush accentuated the dress, while its green elements enhanced the actor's stunning eye color.

This Drew Barrymore look from the 1998 rom-com "Ever After: A Cinderella Story" is absolutely iconic. Given this, it was also among the many references for Lili Reinhart's film-inspired fashion moments. 

The actor posed for the camera in a breathtaking reimagining of Berrymore's most well-known look from the film, on Instagram in September 2026. Reinhart's version was by Rodarte, and while it was inspired by fashion from the 1998 hit, it wasn't an exact replica. Not that we're complaining. She looked amazing.

In late August 2026, Lili Reinhart was photographed in Los Angeles, California, in a look that subtly paid homage to the 1999 crime comedy "Jawbreaker." The '90s classic is known for its frequent use of cropped cardigans, and it served as a perfect choice for an early screening of "The Love Hypothesis." Reinhart's outfit was by the brand Leo Lin, and the delicate floral details added the perfect touch of romance.

The purple bandage dress that Sandra Bullock wore in the 2000 action comedy "Miss Congeniality" is a classic early aughts fashion moment. In September 2026, Lili Reinhart was photographed in New York City rocking an Hervé Léger replica of the iconic dress. Just like Bullock's character, Reinhart paired the dress with matching purple high heels and sunglasses, ensuring we instantly knew which character served as inspo.

While the 2007 romantic war film "Atonement" left us in pieces, the film's fashion filled our hearts. And it seems that Lili Reinhart and her stylist, Ib Abdel Nasser, couldn't agree more, as the duo added the green dress to their film-inspired fashion repertoire.

As part of the fun "The Love Hypothesis" press looks, Reinhart also posed for Instagram photos in a silky green Tory Burch dress. This piece was definitely inspired by the Jacqueline Durran number that Keira Knightley's wore in the 2007 hit.

Among the more casual looks that Lili Reinhart rocked during September 2026 is the graphic tee and low-rise jeans combo that she was spotted wearing while in New York City. Of course, graphic tees were a must-have in the early aughts. Reinhart's piece, which says "Love is Anarchy" and has safety pins on the side, is a vintage design by Dolce & Gabbana. Paired with the low-rise Roberto Cavalli early aughts jeans, the outfit certainly makes the "Riverdale" star look like a Y2K diva.

While the colorful dress from the 2004 rom-com "13 Going on 30" might be the film's most well-known fashion moment, Lili Reinhart decided to flaunt another look from the aughts classic. In September 2026, the actor was photographed in New York City wearing a silky lace dress and a polka-dot jacket, proving that a slip dress can be elevated for any occasion. The look was loaned to the star by Nanette Lepore, and it was a clear homage to the fit that Jennifer Garner wore in the 2004 film. 

For a New York City evening look in September 2026, Lili Reinhart stunned in a lavender purple and teal green fit — a color combo that perfectly fit her press run for "The Love Hypothesis." While the Valentino design is from 2026, it certainly features a nostalgic 2000s aesthetic, making it a perfect choice for the actor's nostalgic wardrobe. Together with her stylist, Reinhart has created an impressive collection of fun and colorful looks, reminding us that everyday fashion can also be inspired by some of our favorite on-screen gals.