With behind us, TikTok users have deemed the fall forecast “Princess Diana weather.” This year, the it-girl outfit of autumn is Princess Diana’s signature off-duty uniform of bike shorts paired with an oversize sweatshirt. The lived-in look is the perfect outfit for the early days of fall: cozy enough for chilly mornings, yet sporty and casual enough for everyday wear.

Of course, the appeal of this simple athleisure look largely lies in the legendary of the people's princess herself. Despite today's voracious trend cycles, Diana’s style has remained enduringly popular, says Elizabeth Holmes, author of “There was a real spirit with which Diana dressed that resonates particularly well in the age of social media,” Holmes tells TODAY.com.

While most trends from the ‘80s and ‘90s have remained firmly in the past — think crimped hair and hammer pants — Diana’s style still resonates with Gen Z nearly three decades after her death in 1997. On TikTok, creators have embraced the “Princess Diana weather” trend with outfit recreations aimed to honor the late Princess of Wales. While roomy crewnecks and bike shorts may not seem like the most groundbreaking outfit, the style's attainability is part of its appeal.

“It’s pieces that everyone has in their wardrobe, but you might not think to style as such,” Holmes says. In sharp contrast to the buttoned-up image of the royal family, Diana's street style was relaxed, unpretentious, and entirely surprising, makin.