Jessica Simpson Photo by: MO / Bauer-Griffin
Jessica Simpson Prepares for Takeoff in L.A.
• A Dallas-bound Jessica Simpson, looking travel-ready as she arrives at Los Angeles International Airport (en route to meet up with beau Tony Romo).

• Nightlife staples Lindsay Lohan, Leonardo DiCaprio and Adrian Grenier, partying into the wee hours at SBar in Los Angeles. When Lohan arrived, in a red leather coat, the starlet made a B-line for Grenier's table, launching into a flurry of kisses and hugs. "It just looked friendly," an onlooker says of the affectionate greeting. And Lohan spent the rest of her night chatting with her friends. Meanwhile, a "mellow" DiCaprio enjoyed a guy's night out – augmented by one more pal when Grenier hopped over to his table to chat.

Ryan Gosling, getting the serious royal treatment – literally – at New York hotspot Guesthouse, after the star showed up with a Jordanian prince in his entourage. Before he entered, the Notebook star approached the door and said he was looking for good hip-hop, a source says. Inside, Gosling and his royal pal took in the scene and had some drinks.

Amy Winehouse, complimenting a fellow partygoer at London's Shoreditch House on a pair of cream platform Miu Miu shoes.

Janice Dickinson Photo by: Michael Bezjian / WireImage
Caught in the Act!| Caught in the Act, Jessica Simpson
Janice Dickinson, celebrating her 53rd birthday – and the wrap of the third season of the Janice Dickinson Modeling Agency – at Central in Los Angeles. According to a partygoer, the reality star, who's been known to fudge her age, had only 48 candles on her cake. Hmm... But that didn't stop her from jumping up on a couch when everyone started singing "Happy Birthday," imploring her guests, "Louder! I can't hear you!"

Ryan Phillippe, having a business dinner and wowing the ladies at Katsuya in Brentwood, Calif. The actor played it casual and sipped on sake as he devoured an array of sushi. While Phillippe seemed focused on his dining companions, women in the restaurant were a bit mesmerized by the hunky actor. One waitress even asked for his autograph.

• By MARK DAGOSTINO, JENNIFER GARCIA, MARY MARGARET, COURTNEY RUBIN and CYNTHIA WANG

Thursday's Caught in the Act >