For some, August 31st simply marks the unofficial end of summer, a time when we can all start looking forward to chillier autumn afternoons andpumpkin spiceeverything. But forCharles Spencer, Princess Diana's younger brother, it will forever be remembered the day his beloved sister passed away in a tragic car accident. As he so often does, Spencer chose to acknowledge the day with a solemn yet sweet Instagram post. View this post on Instagram A post shared by Charles Spencer (@charles.earl.spencer) Spencer's simple post contains just two images—one of a bouquet of white and pink flowers, and another of a peaceful body of water (presumable the Round Oval lake) with a short dock. Both are beautifully serene photos, but it's the caption that really tugged at my heartstrings: "Flowers we cut this morning from Althorp's gardens for the Island. Always an impossible day." Terry Fincher/Princess Diana Archive/Getty Images A stately home in Northamptonshire, Althorp was where Diana lived, alongside her brother, from the age of seven all the way up untilher marriage to King Charles. It's also where she was buried, on a small island in the middle of the ornamental Round Oval lake. Though Spencer's post may be short, it's incredibly touching to see him choosing flowers from around their shared home to honor her with. TIM GRAHAM/Getty Images Sadly, this tragic anniversary comes just two months after Diana's birthday, on July 1. While undoubtedly a happier occasion to acknowledge, it is surely a bittersweet day for Spencer as well. Although this year he chose to honor what would have been Diana's 64th birthday with a very celebratory photo indeed. Spencer dug up someold childhood photos from Diana's 6th birthday partyfor which their father rather miraculously "secured the services of Bert the Camel, from Peterborough Zoo." Tim Graham Photo Library via Getty Images It's been 28 years since Diana died in a car crash that also claimed the lives of Dodi Fayed and their driver, Henri Paul. And while such an immeasurable loss never really gets much easier to reckon with—making today, as Spencer writes, always an impossible day—there are so many wonderful things to remember about Diana. Alongside a peaceful lake with a beautiful bouquet of flowers feels like as good a place as any to honor her memory. Princess Diana's Brother Posts 1960s Pic of Their Parents—and Everyone Is Saying the Same Thing About Them PureWow's editors and writers have spent more than a decade shopping online, digging through sales and putting our home goods, beauty finds, wellness picks and more through the wringer—all to help you determine which are actually worth your hard-earned cash. From our PureWow100 series (where we rank items on a 100-point scale) to our painstakingly curated lists of fashion, beauty, cooking, home and family picks, you can trust that our recommendations have been thoroughly vetted for function, aesthetics and innovation. Whether you're looking for travel-size hair dryers you can take on-the-go or women's walking shoes that won't hurt your feet, we've got you covered.