Having a sibling who is well-known or a celebrity when you aren’t can be quite jarring. The person you grew up eating dinner with and complaining about on long car rides is now beloved by a group of strangers. The world thinks they’re perfect and can do no wrong, but you know they snore and have to sleep with the light on. Take that to the next level and imagine your sister married into the royal family and will be the next Queen of England. Truly, it’s mind-boggling. Yet, James Middleton and Pippa Middleton live this every day with their sister, Princess Kate. View this post on Instagram A post shared by The Prince and Princess of Wales (@princeandprincessofwales) James Middleton Shared A Sweet Reaction To His Big Sister’s Moment Prince William and Princess Kate shared photos on Instagram from President Donald Trump’s official state visit on September 17, 2025. Kate wore a show-stopping gold gown. According to People, the princess tapped British designer Phillipa Lepley for the couture gown with hand-embroidered Chantilly lace. She topped the outfit off with Queen Mary’s Lover’s Knot Tiara. Fans and royal enthusiasts loved seeing the future King and Queen looking so glamorous. The pair captioned the photo, “Ready for The State Banquet.” James Middleton immediately chimed in and shared a sweet message for Kate and William, writing, “Proud to be ,” accompanied by a flag emoji. “This dress is AMAZING,” another person wrote. “I’m actually crying with happy tears about how beautiful this couple is!!!” “WOW! There aren’t enough words to describe how gorgeous you both are. Thank you so much for sharing this stunning portrait with us,” another comment reads. “Princess Catherine: you are beyond beautiful and elegant. Prince William is looking dapper too, but what a lucky guy,” a fan shared. We know it’s been a few years, but we imagine James Middleton is still in awe that this gorgeous future monarch is his sister. What a trip. This story’s featured image is by Aaron Chown-WPA Pool/Getty Images. The post James Middleton Shares Sweet Message For Princess Kate After State Banquet Gown Reveal appeared first on InspireMore.