"Mike and I are so excited. We're expecting a baby in December!" said Guthrie, who's already mother to 1-year-old daughter Vale.
However, due to her pregnancy, Guthrie revealed that she's decided to opt out of NBC's live coverage of the Rio Summer Olympics to avoid contracting the Zika virus. "I'll miss it," Guthrie said. "You'll have to go to female beach volleyball without me Matt [Lauer]. Try to carry on!"