Pillsbury Funfetti Cake Mix + Diet Cream Soda = Perfect (& PRETTY!) Party Cake PER SERVING (1/12th of cake): 180 calories, 3.5 fat, 306mg sodium, 36g carbs, <1g fiber, 23g sugars, 1g protein -- POINTS® value 4* Cake mix and diet soda? Awesome. Pretty colors? Also awesome. Fat-slashed cake with beautiful dots of color? SIGN US UP! Stir together a can of diet cream soda with a box of Funfetti cake mix. Don't add ANY of the other stuff the box tells you to add... Just the soda. Then simply bake according to package instructions, or until a knife inserted into the center comes out clean. Hooray for gorgeous guilt-free cake! Thank you Hugry Girl For The Recipe!!