Hilary Duff: Sister Haylie Birthday Celebration!

Hilary Duff stops to feed a parking meter before shopping at Intermix on Saturday afternoon (February 16) in Beverly Hills, Calif.

“Oh ya! This is why we live in Cali people! 81degrees,” the 25-year-old actress tweeted of the warm weather.

PHOTOS: Check out the latest pics of Hilary Duff

Later in the evening, Hilary, her husband Mike Comrie and pals Alanna Masterson and Georgie Flores celebrated Hilary‘s big sister Haylie‘s birthday at Greystone Manor Supperclub, where Calvin Harris DJ’d all night long.

“Everyone was dancing all night long and looked like they had a blast,” a spywitness tells JustJared.com. “They even brought out a pretty pink cake for Haylie at the end.”

The day before, Hilary was spotted grabbing some breakfast with Mike, baby boy Luca, and some other family members at Jack n’ Jill’s.

35+ pictures inside of Hilary Duff shopping in Beverly Hills…