Blake Lively enjoyed a low-key dinner on the patio of Katsuya by Starck Laguna Beach with her mother and father. The trio sampled a bit of everything, including rock shrimp tempura (a signature dish at the restaurant), crispy rice with spicy tuna, miso cod and some green tea and mango mocha for dessert. And everyone drank iced green tea – no alcohol!

Days after stepping out at hotspot Katsuya, Mark Ballas and former American Idol contestant Pia Toscano went out for another sweet dinner – this time at Mr. Chow in Beverly Hills. After the meal, the two waited for their car at the valet stand, and though they didn't show too much PDA, Ballas was quick to open the car door for his girlfriend after it was retrieved by the valet.

Christina Aguilera had two dapper dates during a recent dinner at Katsuya Brentwood: her new beau Matt Rutler and her "mane man," celeb stylist Ken Paves. Sporting a figure-hugging little black dress, the singer and her beau cozied up and looked very much in love as they sipped Pinot Grigio in their private booth.

Ashley Greene and Joe Jonas stepped out for a hot date at Katsuya Hollywood. The new couple grabbed a private table hidden behind curtains, but that didn't stop fellow diners from spotting them. "If Ashley sat any closer to Joe, she would have been in his lap," one onlooker said. The pair did enjoy a bunch of dishes, including yellowtail with jalepeño, all washed down with sake.

On-again couple Miley Cyrus and Liam Hemsworth cuddled up on the couch in the Dragon Room, a private dining room at Katsuya in Brentwood, Calif. The two were catching up and "looked so in love," an onlooker says, of their dinner date. According to the onlooker, Cyrus also enjoyed milk and cookies in between whispering into her Aussie beau's ear.

• Doting dad Ryan Phillippe took his kids, Ava and Deacon, out to dinner at Katsuya Hollywood. The family was joined by another couple, but Phillippe was extremely attentive to his children all night, a source says. The group dined on crab hand rolls, edamame and tempura. The kids sipped lemonade, while the adults had cocktails. Also at the restaurant that night: Diane Kruger, dining with a male friend.

Justin Timberlake, dining with LeBron James and about 30 people at a dinner hosted by record mogul Jimmy Iovine at Katsuya L.A. Live after the Los Angeles Lakers game. At one point, a little boy approached the basketball star and asked for a picture – and he happily obliged.

Kris Jenner joined daughters Kim and Kourtney Kardashian (with boyfriend Scott Disick) for dinner at Katsuya Hollywood. The group, filming the next season of Keeping Up with the Kardashians, dined on sashimi in a private area of the restaurant. "Everyone was in good spirits," a source tells PEOPLE.

Also enjoying a guys' night out: Benji and Joel Madden. The brothers were enjoying dinner with friends at Katsuya Hollywood in a very large booth, and, an observer says, "It seemed as though they ordered everything on the menu!" Also at the sushi spot that night: Ciara, who ate in the private Dragon Room behind closed curtains, and Olympian Shaun White, who feasted on the restaurant's signature dishes.

It's a double date! Tony Parker and wife Eva Longoria Parker enjoyed a quiet meal with pal Mario Lopez and his pregnant girlfriend Courtney Mazza at Sam Nazarian's Katsuya Hollywood. The four were originally seated in the private Dragon Room, but moved because they wanted a quieter spot. The group skipped alcohol – but sipped green tea with their dinner.