This is worth a peek. Jessica Simpson on the kitchen floor and whipping up cake batter while in stilettos absolutely nailed pre-holiday vibes today, with the 40-year-old proving she isn't just a pretty face as her video promoted her Jessica Simpson Style brand. The best-selling label, turning $1 billion in 2015 sales and still going strong, today featured its famous CEO, with a caption even saying: "Let us be your elves!" Jessica might have dropped 100 pounds, but cake is still on the menu. Check it out below.