Kourtney Kardashian has said she feels the stress of COVID-19 at the holidays with three kids.And on Thursday the Keeping Up With The Kardashians star tried to help her fans by taking to her POOSH website with an article about 'taking time for yourself.'The 41-year-old siren helped get the word out with a flashback photo of herself in her white Calvin Klein underwear as she lay on a bed.