The retired tennis icon, aged 41, flaunted her impeccable style in the Austen mini dress, the first drop of her indie clothing line launched back in 2018.
Ahead of her cameo appearance in the highly anticipated Glass Onion: A Knives Out Mystery film, Williams radiated confidence in the eye-catching ensemble.
Her outfit was perfectly complemented by matching silver stilettos, adorned with sleek, simple straps, emphasizing her elegant silhouette.
With her brunette curls styled into tight, glamorous curls and a silver smokey eye accentuating her features, Williams epitomized sophistication and grace.
The dress, part of her S by Serena brand, boasted ruches on the sleeves and sides, accentuating her toned physique and adding flair to the overall look.
Opting for minimal jewelry with just two silver rings, Williams let the dress take center stage, showcasing her innate sense of style.
Beyond her tennis accolades, Williams' passion for fashion was evident, having studied fashion design at the Art Institute of Fort Lauderdale before establishing her successful brand.
Excitingly, Williams will make a cameo in the upcoming Knives Out sequel, joining a stellar cast including Daniel Craig and Janelle Monáe, set for release on November 23.
Reflecting on her involvement in the film, Williams expressed her excitement and praised the stellar performances of her co-stars.
As the film prepares for its wide release and subsequent debut on Netflix in December, Williams continues to captivate audiences with her multifaceted talents and undeniable charm.