Hilary Duff

Hilary Duff spent a busy weekend in LA juggling family and fun. On Saturday, she stepped out with her son, Luca, who wore mini UGGs and a Beatles "Yellow Submarine" onesie, to run errands. They stopped by a Sherman Oaks mall and were later back together to pick up fresh produce at a farmers market. That evening, Hilary switched gears to attend a party at Skybar in West Hollywood to celebrate Mindy Kaling's upcoming comedy series, The Mindy Project. She wasn't the only famous face in attendance since John Mayer, B.J. Novak, and more gathered for the bash. It looks like Hilary is enjoying her downtime before getting back to work, since she recently signed a deal to star in and produce a half-hour comedy series.

Breakups occasionally inspire a makeover, and that seems to be the case for John Mayer. He stepped out in West Hollywood last night with a fresh new haircut. John partied with pals B.J. Novak, Mindy Kaling, and Hilary Duff at the Mondrian's Skybar to toast Mindy's upcoming Fall comedy series, The Mindy Project. While John caught up TV's finest, some 35 miles to the west, Katy Perry spent her evening dining at Disneyland's ultraexclusive Club 33. John and Katy split earlier this week after only a few short weeks of dating. Since news of the breakup came out, both have spent time in the company of friends. John and Katy share a mutual acquaintance in Hilary, who spent Friday night partying with Katy in Santa Monica.

Hilary Duff kept up a busy schedule in LA yesterday. The actress began her morning with a boxing class in Hollywood, then changed out of her workout gear to go shopping in Santa Monica with baby Luca Comrie. Luca, 5 months, joined Hilary for their latest adventure as he adjusts to life with his first tooth. Her little man is used to hanging out with mom at home, but soon the pair might find themselves spending more time on sets. Hilary recently inked a new development deal that will have her producing and starring in an upcoming untitled TV series. No word on the concept, though it sounds like the half-hour comedy will likely play up the comedic timing she honed on her former Disney series, Lizzie McGuire.

From satchels, to clutches, to fringed and textured numbers, celebrities around the globe have been spotted toting the chicest sunny-yellow bags. Krysten Ritter paired her floral Dolce & Gabbana dress and ankle-strap espadrilles with a mini yellow bag in Las Vegas, Michelle Monaghan worked printed Tucker pants with a sunny Coach tote in LA, while Serinda Swan styled her studded Zara jacket with a croc-embossed YSL clutch in Beverly Hills. Cruise through to check out which celebrities have been test-driving this vibrant new trend, then shop exact and similar bags to inject a pop of color into your Summer ensembles.

Hilary Duff was solo shopping at a Ralphs grocery store in LA yesterday, but later, she took her sleeping son, Luca Comrie, along to a friend's house for a party in Beverly Hills with dad Mike Comrie. Hilary tweeted afterward, "Went to a one year old's birthday party today with Luca and Mike! So funny and sweet." Hilary and her son are together on the West Coast after taking a family trip to NYC with Mike Comrie earlier this month. It was Luca's first trip to the Big Apple, and it came just after a June getaway to Mexico. He's racked up the frequent miles by just 4 months old. In fact, Friday was his four-month milestone, and Hilary shared on Twitter, "Time's flying."

Hilary Duff and her husband, Mike Comrie, stepped out in NYC with their son, Luca, yesterday. The family of three has been exploring the Big Apple since arriving last week. Mike and Hilary went for a walk with Luca on Thursday as they enjoyed the hot Summer weather. Little Luca, who is just 4 months old, is already becoming quite the traveler with recent visits to Mexico and Napa. Hilary's been sharing plenty of snaps of Luca during their many adventures, since she's currently working with Nikon on its Small Moments Are Huge campaign.

Hilary Duff and Mike Comrie took a walk around Manhattan with their son, Luca, yesterday. The couple's almost 4-month-old baby is visiting NYC for the first time, but he's already made multiple other trips. Hilary brought Luca to Mexico in June and earlier this month they checked out Napa. While packing for the East Coast getaway, Hilary tweeted, "This baby is world traveling!" It's been an exciting Summer for the Duff-Comrie family and they still have more fun in store. In August, Mike and Hilary will celebrate their two-year wedding anniversary. They tied the knot in Santa Barbara back in 2010.

Hilary Duff was in a bikini yesterday for a vacation with her son, Luca Comrie, in Mexico. She's south of the border with Luca and other members of her family, including sister Haylie Duff and their parents, Rob and Susan. Hilary Duff's postbaby bikini body was covered up by a caftan earlier yesterday, but she showed skin in her two-piece later on for a dip with her son. Hilary and her husband, Mike Comrie, welcomed baby Luca earlier this year in March. She's since stuck close to home in LA to spend time with him and Mike, but also focusing on fitness with the assistance of trainer Harley Pasternak. Hilary's also got a new project to focus on. She's teamed up with Nikon as part of their Small Moments Are Huge campaign and is sharing even more pics of her adorable family.

Hilary Duff joined her sister, Haylie, and parents Rob and Susan on a family vacation in Mexico yesterday. The ladies took a casual stroll around their resort but kept their bikinis covered up under brightly colored caftans. Hilary showed off a hint of her post-baby bod and has recently been hitting the gym with celebrity trainer Harley Pasternak. She's not the only actress who has been focusing on fitness in recent weeks; Jessica Simpson has also been hitting the gym. They've been keeping fans up to date on their babies, though, with Hilary sharing Luca's cute milestone moments on Twitter and Jessica posting a new photo of her pride and joy Maxwell on Facebook.