Preheat the oven to 350 F. In a large bowl, combine butter with powdered sugar until fluffy. Add in the lemon juice, and mix until smooth. Add in the flour, mix until it is fully combined.
Fold in the white chocolate chips. Roll the cookie dough into balls, and flatten slightly. Place the cookies onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.