Shirtless Brad Pitt had Knox in his arms for a fun day at a water park in Malta this afternoon. Angelina Jolie, who was wearing a wet suit, was also on hand for the outing, as were Pax, Shiloh, Zahara, Maddox, and Vivienne. The family checked out the local attraction and apparently got up close and personal with dolphins during their visit. They wrapped up the excitement and headed out of the park as a bunch with both Angelina and Brad sporting wet hair. It was a rare day off for Brad, who was busy filming World War Z over the weekend. He's been showing off the set lately with his adorable kids joining him on location multiple times last week.

Jennifer Aniston did a quick change and stepped out in NYC today in a short black dress for tonight's appearance on The Daily Show With Jon Stewart. Jennifer began the day on GMA talking about her "extremely lucky" and "extremely happy" personal life and later moved along to her next engagement in a chic vest and jeans, but kept her new "Norman" tattoo under wraps. Jennifer has two more days of solid promotions before Thursday night's LA premiere of her dark comedy Horrible Bosses. Her costars are also getting in on the interview action with Jason Sudeikis dropping by Conan tonight and Jason Bateman sitting down with Jimmy Kimmel tomorrow. Jennifer's nearing the end of her work obligations, which could mean a relaxing trip, perhaps even to her favorite spot in Cabo, for Jen and Justin Theroux around the Fourth of July holiday.

Gywneth Paltrow stepped out in London tonight for the special Beyoncé 4D event. Gwyneth, who has been spending some time in her husband's hometown recently, arrived at Shepherds Bush Empire for the exclusive evening in a high ponytail and belted sundress. The soirée will reportedly include a screening of a making-of documentary that will take guests behind the scenes of B's new album, 4, which hits stores tomorrow, as well as a special performance by the superstar. Beyoncé and Gwyneth are good friends, and Gwyneth was in the audience at Beyoncé's Glastonbury Festival show over the weekend to cheer on B as the singer closed out the musical celebration. Gwyneth will get the chance to reunite with some of her co-workers at the party tonight. Glee stars Chris Colfer and Kevin McHale were also on hand for B's bash, and Gwyneth tweeted a fun picture of her and Kevin hanging out together inside.

Shia LaBeouf donned a suit, but no tie, as he headed into The Late Show With David Letterman's studios today in NYC. The actor, who sported a sleek pompadour for his TV appearance, is back in the states after spending part of last week in Europe. He joined his fellow cast members for the Russian premiere of Transformers: Dark of the Moon on Wednesday before the group split up to tackle press duties in Madrid, Berlin, Paris, and London. Shia was also profiled in yesterday's Los Angeles Times and talked about both his career and his romantic life in the interview. Shia's girlfriend Karolyn Pho was one topic of conversation, and he admitted that his new love is encouraging him to be more grown-up and adventurous in life. On the big screen, though, Shia's only got eyes for Rosie Huntington-Whitley, who replaced Megan Fox in the third installment of the action franchise.

Penelope Cruz looked red hot in a sexy Roksanda Ilincic dress for Madrid's Walk of Fame induction ceremony today. She was joined by her handsome husband, Javier Bardem, who looked on with pride while she accepted her honor and later knelt down for photos with his own prestigious star. Spain's Walk of Fame, which officially opened today, recognized 25 of the country's actors and directors, like Penelope and Javier's close friend Pedro Almodovar and Antonio Banderas. Today's event marks her second accolade of the year after Penelope received a star on Hollywood's Walk of Fame in April. Penelope and Javier's number one fan, their 6-month-old son Leo, wasn't in attendance for the event, though he did get a visit recently from his uncle Eduardo who brought girlfriend Eva Longoria home for a few days.

Jay-Z and Beyoncé Knowles hopped in a waiting chopper today at London's Battersea Heliport. She was sporting a casual look and had her Lena Erziak handbag in tow as she headed for the helicopter. The musical married couple reunited after spending the day on separate pursuits around town. Beyoncé finished shooting footage for her exclusive interview on Piers Morgan Tonight, which airs this evening, at Harrods. Meanwhile, Jay-Z took in a tennis match between Rafael Nadal and Juan Martin Del Potro at Wimbledon. Jay-Z and B were in London together over the weekend for Beyoncé's Glastonbury performance. It was her first time taking the stage at the annual music festival, although Jay-Z has been a featured artist there in the past. This year, she shared the top billing with acts including U2 and Coldplay, and Chris Martin's wife and their family friend, Gwyneth Paltrow, was in the audience to cheer Beyoncé on. Beyoncé will be heading back to the states shortly and has a big week ahead — her new album 4 will be released tomorrow and our latest I'm a Huge Fan winner will be meeting the superstar in person this Friday in NYC!