Kathie Lee Gifford and Jenna Bush Hager pose in front of a live audience on Monday, Feb. 12, 2018. On Tuesday, Feb. 13, they welcomed Bush Hager's mother, former first lady Laura Bush, as a special guest.

Kathie Lee Gifford and Jenna Bush Hager pose in front of a live audience on Monday, Feb. 12, 2018. On Tuesday, Feb. 13, they welcomed Bush Hager's mother, former first lady Laura Bush, as a special guest.

NBC/Nathan Congleton

Laura Bush joined her daughter, Jenna Bush Hager, and Kathie Lee Gifford on Tuesday to co-host the fourth hour of Today.

Gifford and Hoda Kotb normally host the fourth hour of the show. But while Kotb is off on Olympics duty, Bush Hager has stepped in.

Bush Hager and Gifford have been visiting Megyn Kelly's studio -- and her live audience -- while Kotb is away. On Tuesday, they welcomed the former first lady as a special guest.

The audience gasped when the former first lady appeared and gave her a standing ovation.

Bush was at ease at the hosting desk. She even answered Gifford's probing questions. Watch to learn about her first date with the former president, what he probably won't get her for Valentine's Day and why she was wearing Kathie Lee's shoes.

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