Cassandra Grey/Instagram Harry Styles attended the nuptials of Instagram executive Charles Porch and Robert Denning in Paris over the weekend At the wedding, he gallantly came to the rescue ofReal Housewives of New York Cityalum Carole Radziwill, who was struggling with her voluminous dress, and helped her up the staircase at the hotel venue Fellow wedding guest Cassandra Grey shared photos of the moment on Instagram Harry Styleshad a Prince Charming moment at a recent wedding. The "Daylight" singer, 31, attended the Paris nuptials of Instagram executive Charles Porch and Robert Denning over the weekend. According to anInstagram postshared by fellow guest Cassandra Grey, founder of luxury beauty retailer Violet Grey, Styles gallantly came to the rescue ofReal Housewives of New York CityalumCarole Radziwill, who was struggling with her voluminous dress on the large staircase at the wedding venue, the hotel Le Bristol. "I saw @caroleradziwill struggling to get her rather large @giambattistavalliparis dress up the grand stairwell. Naturally and quickly, I managed to get my iphone out of my dinner clutch to document what could have been fashion Parisian castle roadkill," Grey recounted in her caption. Cassandra Grey/Instagram "Then a stranger to Carole and I, a handsome @harrystyles, seemingly out of nowhere, graciously lent her his arm like Cinderella's prince," she continued. Grey shared a photo of the musician walking up the staircase between Radziwill and another woman. He looked dapper in a black suit, white shirt and black-and-white polka-dot tie. A second photo showed Styles and Radziwill, 62, with their arms encircled as they smiled playfully for the camera. Cassandra Grey/Instagram Porch and Denning's Paris event had been billed as one of the buzziest weddings of the summer, with more than 400 guests expected to attend, including many big names from the art and fashion worlds, according toTown & Country. It seems Styles has been on the wedding circuit this past week, as he also attended the Aug. 31 nuptials of his childhood friend Jonny Harvey in Ireland. He can be seen in avideo montagefrom the wedding. Styles' appearance at the two recent weddings came after he and actressZoë Kravitzwerespotted kissingin Rita's in London on Aug. 19, following a promotional event for her newest film,Caught Stealing. Saira MacLeod/WWD via Getty A source later told PEOPLE, "He's been spending time with her while she's been on her press run." The pair were also spotted walking together down a street in Rome in avideo shared on Xby a Styles fan account on Aug. 24. Kravitz, 36, had her arm wrapped around the Grammy winner's during their stroll. Styles was previously in Rome earlier this year, and he met a young couple, named Jess and Ted, at the time and snapped a selfie with them. In a kind gesture, Styles later DMed the photo to Jess on Instagram. Never miss a story — sign up forPEOPLE's free daily newsletterto stay up-to-date on the best of what PEOPLE has to offer, from celebrity news to compelling human interest stories. "As promised, hope you guys had a great trip. H," he signed the message, according to Jess. "[He] was genuinely lovely," she later told PEOPLE of her and Ted's interaction with the music star. Read the original article onPeople