Khloe Kardashian reportedly changed her baby's surname to match that of her son's father Tristan Thompson.
The reality TV star had initially given her son the Kardashian family name before having a change of heart and changing it to match his sister True Thompson.
After keeping her baby boy's name a secret, she finally shared that he'd been named Tatum Robert Thompson, taking the middle name from her late father Robert Kardashian.
