Alessandra Ambrosio stocked up on groceries in LA on Thursday.

Julianne Hough wore white to a party to kick off the US Open in NYC on Thursday.

Kate Moss [3] slipped into a black bikini while vacationing in Spain on Thursday.

Eva Longoria [4] posed with Ed Harris at the LA premiere of Frontera on Thursday.

Tara Reid [5] and Ian Ziering attended a bash for Sharknado 2 in LA on Thursday night.

Zoe Saldana showed off her bump alongside Michelle Dockery at an Emmys party in LA on Thursday night.

Michelle Rodriguez bared her taut midriff in NYC on Wednesday, the same day we learned her relationship with Zac Efron is reportedly over [6].

Ashley Greene [7] went floral for a US Open kick off party in NYC on Thursday.

Tyra Banks [8] and Mario Lopez took a photogenic selfie while filming Extra in LA on Wednesday.

On Wednesday, David Beckham [9] opted for a casual look to grab dinner with Gordon Ramsay [10] in LA.

Serena Williams showed off her tennis moves in a skirt and serious stilettos during an episode of Late Show With David Letterman in NYC on Wednesday.

Jared Leto let Jimmy Fallon shave his beard [11] on The Tonight Show in NYC on Wednesday.

Heidi Klum [12] dazzled on the America's Got Talent red carpet in NYC on Wednesday.

Zac Efron [13] scored a good workout while filming scenes for his upcoming movie We Are Your Friends in LA on Tuesday.

Madonna [14] was surrounded by tan friends on the open water in Formentera, Spain, on Tuesday.

Rita Ora and Chrissy Teigen brought infectious energy to the launch of DKNY's MYNY fragrance launch event in NYC on Tuesday.

Ansel Elgort took a selfie with a fan outside Good Morning America on Tuesday.

Jennifer Hudson [15] hit the high notes with poise while performing on Today on Tuesday in NYC.

Bruce Willis [16] and Josh Brolin [17] were a handsome pair of pals at the Sin City: A Dame to Kill For premiere afterparty in LA on Tuesday.

Rihanna [18] sported short shorts for her Tuesday on the town in NYC.

Joshua Jackson [19] showed off his toned physique while running errands in NYC on Wednesday.

Kelly Osbourne let out a big laugh at an event for her debut clothing line, Stories, in NYC on Tuesday.

On Tuesday, Joe Manganiello's ripped body was on display in LA.

Joseph Gordon-Levitt opted for a casual look — complete with a backpack! — after his appearance on the Late Show With David Letterman in NYC on Tuesday.

Rashida Jones struck a pose at an event for New Balance and James Jeans in LA on Tuesday.

Taylor Swift [20] checked out the NYC view on Monday.

Chloë Moretz held onto her brother Trevor's hand while walking around NYC on Monday.

Alessandra Ambrosio rode waves in Maui on Sunday.

Rose Byrne cuddled a kitten at a Monday event in NYC.

On Monday, Jared Leto [21] picked up his cell during a visit to NYC's Music Choice.

Sofia Vergara grabbed lunch with friends in LA on Monday.

Diane Kruger [22] left an NYC gym on Monday.

The Rock snapped photos at an event for Hercules in Mexico City on Monday.

Mandy Moore [23] and Minka Kelly checked out a movie in LA on Monday night.

Hilary Duff [24] was all smiles in LA on Tuesday as she ran errands.

Selena Gomez [25] strutted her stuff while lunching with friends in LA on Tuesday.

Zoe Saldana and her husband, Marco Perego, took a stroll around their LA neighborhood on Monday.

Jaime King and Jessica Alba [26] posed together at the LA premiere of Sin City: A Dame to Kill For on Tuesday night.

Ali Larter [27] put her baby bump on display during a Pampers event in LA on Wednesday.

On Wednesday, Jessica Chastain flashed her smile on a stroll with her boyfriend, Gian Luca Passi de Preposulo, in NYC.

Reese Witherspoon [28] looked polished for an afternoon of errands in LA on Thursday.