Prince Harry and Princess Eugenie hit up Public nightclub, owned by their pal Guy Pelly, in London on Friday, emerging after the evening of partying looking like they both may have spilled drinks on themselves. It's been four weeks since Harry acted every bit the gentleman and supportive brother at Prince William and Kate Middleton's royal wedding, and since then Harry has been getting back to his regular routine of hitting up the city's hot spots in his free time. He's Britain's most eligible bachelor at this point, and Prince Harry chatted up Charlize Theron at one of his polo matches, though he's rumored to still be going strong with Chelsy Davy. As for his brother, the newlyweds Prince William and Kate Middleton welcomed the Obamas to the UK earlier in the week, which marked their first official duties as the Duke and Duchess of Cambridge.

Leonardo DiCaprio and Blake Lively were spotted together in the French village of Saint-Paul de Vence on the Mediterranean yesterday. Blake and Leo have been enjoying a few weeks in Europe, which she kicked off at the Chanel resort show earlier this month. They swung through the Cannes Film Festival, where they were first photographed together hugging on Steven Spielberg's yacht, before a quick vacation in Portofino. Leo was then off to the Italian island of Capri for more big boat fun with Naomi Campbell, Vladislav Doronin, and Lukas Haas for the supermodel's multiple-day 40th birthday party. Both Leo and Blake are treating themselves to a vacation, as he'll soon start work on The Great Gatsby, and she'll head back to the States to promote Green Lantern.

It was a week full of Summer fun and romance for some of our favorite stars. Justin Bieber and Selena Gomez turned up the heat with a beachside, bikini-filled vacation in Hawaii, and Kim Kardashian revealed her 20.5-carat diamond engagement ring from fiancé Kris Humphries. Angelina Jolie and Brad Pitt made a hot pair at his The Tree of Life premiere in LA, and Ryan Reynolds talked openly in a new interview with Details about his sad split from Scarlett Johansson. Click through to see all of these memorable moments, along with even more great pictures, in our gallery!

Kate Moss toted one of the bags from her Longchamp line yesterday when she left her London home with her fiancé, Jamie Hince. The duo were joined by her hair stylist pal James Brown for the outing, and it seemed Jamie was heading off somewhere with his suitcase in hand. Kate and Jamie have been hanging out in London buying furniture for their new mansion and finalizing the plans for their Summer wedding. The nuptials, supposedly taking place in early July, will be preceded by a blowout when his band, The Kills, plays at London's Carling Festival on June 24. There may be another highlight in the next few months for Kate, if rumors that she'll be on the cover of American Vogue's September issue prove to be true.

Jake Gyllenhaal was spotted making his way into a salon in Studio City, CA, yesterday. The actor is still sporting the relatively close-shaved haircut he got to work on End of Watch. Despite his shooting schedule, Jake has been spending lots of time off at low-key lunches, workouts, and errands. He also made a quick trip east recently. Jake was spotted flirting with a brunette out at a Brooklyn bar, but since splitting from Taylor Swift a few months ago, he seems to be mostly flying solo. Instead, he's been focusing on his career and friendships. He was busy on the promotional trail for Source Code for much of March, and once the film hit theaters, he took advantage of a break and joined his buddies from the band Mumford and Sons on the road for part of their recent tour.