Hilary Duff Cooks with Sister Haylie for 'Real Girl's Kitchen'!

Hilary Duff drops off a CD with the title “Better Days” off at a friend’s house on Monday afternoon (September 23) in West Hollywood, Calif.

The 25-year-old entertainer, who will be celebrating a birthday this upcoming weekend, has been teasing her fans about her new music for a while and said that day that she was about to go into the studio to record a new song!

PHOTOS: Check out the latest pics of Hilary Duff

Hilary recently appeared in a promo video for her sister Haylie Duff‘s new project Real Girl’s Kitchen. Check it out below!

FYI: Hilary is wearing Hudson Jeans and a Dannijo necklace.

10+ pictures inside of Hilary Duff stopping by a friend’s house…