Today show star Hoda Kotb had a reason to be cheerful at the start of the week as the mother-of-two marked a special birthday.MORE: Hoda Kotb reveals happy family celebration about her growing familyHoda's best friend of over 20 years, Karen Swensen, was celebrating her birthday, and the star took the opportunity to post some special pictures of the pair together from over the years.These included a black-and-white picture taken decades ago during New Year's Eve, which has pride of place in a