Jennifer Aniston and Justin Theroux Celebrate Engagement and More Celebrity News

The actors dined at New York City's Blue Hill for the festivities. Also, Ashton Kutcher and Mila Kunis are spotted again

This week brought some big news: Robert Pattinson resurfaced amid the Kristen Stewart scandal to eat ice cream, Jennifer Aniston celebrated her engagement, and Jordin Sparks shined in her newly svelte shape after losing 50 pounds. 

Restaurant Buzz

• Robert Pattinson continued his Cosmopolis promotional tour and attended a rooftop party at PH-D at the Dream Hotel in Manhattan, where Shia LaBeouf and Paul Giamatti were also in attendance. Pattinson sipped on beers, smoked his electronic cigarette, and mingled casually amid tons of eyes watching his every move. [People

Katy Perry was on hand to celebrate her brother David's birthday at West Hollywood's Bootsy Bellows. [People]

• After Justin Theroux proposed to Jennifer Aniston, the couple dined at New York City eatery Blue Hill to celebrate the special occasion. [Us]

Rachel Zoe, husband Rodger Berman, and their son Skyler headed to Il Pastaio in Beverly Hills, Calif., for lunch. [Us]

Jessica Alba carried a tray of iced beverages out of Veggie Grill in West Hollywood, Calif. [Us]

• The entire Kardashian clan was out and about to celebrate Kylie Jenner's 15th birthday at Nobu in Malibu, Calif. [Celebuzz]

• New couple Ashton Kutcher and Mila Kunis were seen leaving Casa Vega restaurant in Studio City, Calif. [Hollywood Life]

Heidi Klum headed to New York City's Cipriani for lunch. [Hollywood Life]

Jessica Biel dined at Aigner Gendarmenmarkt in Berlin. [Hollywood Life]

Seen & Heard 

• On Good Morning America, in response to what fans should know about his personal life, Robert Pattinson responded, "I’d like my fans to know that… Cinnamon Toast Crunch only has 30 calories a bowl in it, for instance," he continued. "Pretty much everything that comes out of my mouth is irrelevant." [EW]

Jordin Sparks flaunted her 50-pounds-lighter physique at the premiere of her upcoming movie, Sparkle. [Us]

Andrew Garfield sans girlfriend Emma Stone headed to Los Angeles' Trader Joe's to stock up on groceries. [Us]