Kim Kardashian  Jennifer Love Hewitt charity Antonio Villaraigosa

Kim Kardashian put on her casual clothes and kept her hair in a braid while working at the Los Angeles Mission ... serving hot meals to those in need.

The 31-year-old reality star Tweeted:

    Just left the LA Mission. Met so many kind hearted people! They're goal is to feed 120,000 people by the end of the yr! We fed so many today. Everyone of us can do something small that will make a huge difference to someone else.

iPhone Kim Kardashian  Jennifer Love Hewitt charity

The LA Mission is celebrating its 75th anniversary this year. Also on hand ... actress Jennifer Love Hewitt who stood beside Kim on the serving line. Great to see these smiling starlets doing their part!

Click thru to see which Avatar star was also in the mood to give.