It's not just moms and dads who advocate better school lunches for our kids. Celebrities -- even those who aren't parents -- have made their stance known and joined the fight.

Rachael Ray recently lobbied Congress in person for a bump in school lunch reimbursement rates. Now, celebs are advocating for better school lunches the old fashioned way: writing a letter to Congressman George Miller, Chairman of the Healthy School Meals Act of 2010. Ellen Degeneres and Portia de Rossi penned a joint letter, and Scarlett Johansson and Sarah Silverman have written letters, too. Michelle Obama continues to be a huge proponent of the cause with her Let's Move! campaign.

School lunches have permeated other aspects of celeb culture as well. A recent Top Chef challenge was to create a school lunch, spending only $2.68 per kid (the same amount allotted by the federal government, but after labor and other costs are taken out, it's really less than $1).

How can you help? Read more about the Healthy School Lunches bill, and call your congressional representative to see if they support the bill.

10 Superfoods for Kids
Healthy Family Meal Makeover