Monday

Couples Watch: Justin & Jessica, Blake & Penn

09/15/2008 at 06:00 AM EDT

• Justin Timberlake and Jessica Biel, scouting out real estate – a luxury apartment in New York City! The casual pair left a building in New York's Tribeca neighborhood together, and Timberlake kept his arm around his girlfriend. During their Big Apple visit, the couple also dropped by the singer's Upper East Side restaurant, Southern Hospitality.

• Blake Lively and Penn Badgley, sharing a little post-Saturday Night Live date during an afterparty for the show at Ruby Foo's in New York's Times Square. Lively arrived first, followed by her beau, a bit later. When he arrived, the Gossip Girl star traipsed around the restaurant looking like a lost puppy when at first he couldn't find her. Ultimately they were reunited and sat next to each other, knees touching, at the same dinner table, where they sampled the dim sum. Meanwhile, the show's host, Michael Phelps has his own date for the night – his mom, Debbie! The Olympian also mingled with friends and signed plenty of autographs. And SNL star Andy Samberg spent time with his musician girlfriend Joanna Newsom at the party.

• Mary-Kate Olsen, sitting front and center at the Benjamin Cho fashion show with artist beau Nate Lowman. The hipster duo took in the runway action, sponsored by Miami Boutique Hotels, at New York's Altman Building, while her bodyguards literally stood on the runway before the show began. Soon, though, they ceded the strip to the model – and Olsen seemed to relax and enjoy herself after the show.

• Nicky Hilton, dining with boyfriend David Katzenberg at Apple Restaurant in West Hollywood with a group of friends. The group enjoyed their meal on the patio, where the couple saved room for dessert. "They especially loved the Crème Fraîche Cheesecake."

• Robin Thicke, celebrating at W magazine's New York Affair party with wife Paula Patton. Patton, who was also a host of the bash, posed for pictures and chatted with guests, though she never strayed too far from her R&B singer hubby. They were matching in black and could barely contain themselves from stealing little smooches throughout the night.

• By JENNIFER GARCIA, CARLOS GREER and KRISTEN MASCIA

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