Prince William and his wife, Catherine, went for a hand-in-hand walk around Holyrood Park yesterday morning in Edinburgh. They stuck around the queen's official Scottish residence for a few days after attending Zara Phillips and Mike Tindall's wedding reception there on Saturday night. The Duke and Duchess of Cambridge were decked out in similar outfits for the stroll, both in purple cable-knit sweaters with their collars peeking out. We even had a rare glimpse at the prince in his glasses! Kate and William were soon headed back to their home in Wales. Kate was seen later in the afternoon out at her local Tesco, taking care of the grocery run while Prince William prepped for a return to work with the Royal Air Force.

It was a day date for Leonardo DiCaprio and his girlfriend, Blake Lively, as they went for a bike ride in NYC in Saturday. The couple were joined on their outing by Leo's frequent cycling companion Lukas Haas. Blake, Leo, and Lukas were kitted out to ride in style — each was on an electric, Swiss-made Stromer that retails for around $2,850! Leo accompanied Blake east to the Big Apple, where production is under way on the upcoming season of Gossip Girl. They were last together out in LA so she could focus on her current big-screen project, Oliver Stone's Savages. He's able to travel with Blake during a break in his own shooting schedule. Soon, though, Leo will be back to work shooting The Great Gatsby.

Ben Stiller was looking great shirtless alongside his bikini-clad wife, Christine Taylor, and their family in Hawaii yesterday. Ben tried his hand at surfing and stand-up paddle-boarding while Christine worked on her tan in the sun. The 45-year-old actor brought his kids and closest friends to the island to celebrate Christine's 40th birthday, which was on Saturday. Last night, it was party time when guest of honor Christine was the center of attention at a luau. Jennifer Aniston and Justin Theroux held hands and matched in summery white for the bash after touching down in Hawaii on Sunday. Justin's own 40th is coming right up on Aug. 10, so perhaps the duo will make it an extended tropical vacation. Ben certainly went all out for Christine's big milestone and we also got a glimpse at his next professional project. The newly released Tower Heist trailer shows Ben teaming up with Casey Affleck, Matthew Broderick, and Eddie Murphy in an action-comedy robbery movie.

Ben Affleck had the company of Istanbul's Mayor Mustafa Demir yesterday for a tour around the city's Sultanahmet Square. The plaza is apparently one of the places Ben has scouted for use in his directorial project Argo. He's in Turkey currently gearing up to start work on the film, in which he'll also star alongside Bryan Cranston, John Goodman, and Alan Arkin. Ben's busy afternoon included a stop by Bilgi University, where he grabbed lunch with colleagues and posed for photos with excited fans. There was more fun for Ben with a stop at the Grand Bazaar. A photo of Ben was uploaded to Twitter as he browsed the market, the same place he excitedly shopped for rugs earlier this year!

Gisele Bundchen's perfectly toned figure is on display in nothing but lingerie and high heels for the latest modeling shots for the Brazilian fashion line Hope. Gisele has been the face of the brand for a while, and she's once again showing off her supermodel assets in a series of sexy poses. Gisele Bundchen hit the runway in lingerie for Hope back in May, and these new pictures are featured in its print catalog. The model and mom is also dominating in this year's PopSugar celebrity bikini bracket, where she is currently in seventh place overall — don't forget to cast your votes for a chance to win $1,000 to J.Crew!

Jennifer Aniston and Justin Theroux changed into their best Summer whites last night to attend the actress Christine Taylor's 40th birthday in Hawaii. Christine has been married to Ben Stiller since 2000. In the intervening years, both Christine and Ben have worked with Jennifer and Justin. Jennifer starred opposite Ben in 2004's Along Came Polly while he and Christine both had parts in Tropic Thunder, which Justin wrote. It was just Sunday that Jennifer and Justin arrived in Hawaii on their latest getaway together. The jet-setting couple have traveled between NYC, London, and LA over the past few months as well. The milestone of 40 is one Justin will soon reach, too — his birthday is coming right up on the 10th.