1. Preheat oven to 350 degrees and line pans with cupcake liners.
2. Sift cake mix into a bowl and set it aside.
3. In a large bowl, gently whisk eggs, oil, milk, sour cream and vanilla extract together.
4. Add cake mix and pudding mix, stir until combined.
5. Fill cupcake liners 3/4 full and bake for 17-22 minutes or until an inserted knife comes out clean.