Savannah Guthrie is a doting mother to two young children, and was more than made up when she heard about some happy baby news close to home on Monday.MORE: Savannah Guthrie stuns with swimsuit selfie while relaxing in the poolThe Today star paid a heartfelt tribute to her good friend and colleague Kristen Welker, who welcomed her first child at the beginning of the week.Savannah shared a series of photos of Kristen's bundle of joy, baby Margot, alongside a sweet message. VIDEO: Today's Savannah