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.