Savannah Chrisley is bragging about having lost the "COVID 15," and she's doing it in tight yoga pants. The 23-year-old "Chrisley Knows Best" star, who fronts both South Beach Diet and Body Revolution, made her reveal on Monday, kicking off the week in selfie mode and flaunting her killer workout body for the whole of Instagram. Savannah, followed by 2.2 million and massively in the news for her quarantine baking, proved that the calories don't stick - check out the weight loss below.