Hilary Duff is a Red Hot Flower Girl!

Hilary Duff sports a trendy pair of red pants while buying flowers for a birthday bash on Saturday (March 22) in Studio City, Calif.

The day before, the 26-year-old actress was in very good spirits after breaking a sweat at a workout session in West Hollywood, where she was seen taking a pic with a fan.

PHOTOS: Check out the latest pics of Hilary Duff

Earlier in the week, Hilary‘s adorable son Luca celebrated his 2nd birthday. Happy Belated Birthday Luca!

FYI: Hilary is wearing J Brand pants.

20+ pictures inside of Hilary Duff getting ready for a birthday party with flowers…