Neil Patrick Harris and the rest of the cast of "How I Met Your Mother" are very good at keeping secrets.
Just before he took the stage at Carnegie Hall for the Upfronts Wednesday, Harris tells Zap2it that everyone in the cast knew that Cristin Milioti ("30 Rock") was going to be revealed as the mom in the series.
"The cast was in the know," Harris tells Zap2it. "It was just to make sure we knew and didn't say anything out of line. We have known for Season 8 they were going to reveal her."
The Season 8 finale Monday showed her as the mom, who had previously only been seen as the woman under the yellow umbrella. She was buying a ticket to the fictional land of Farhampton, where Barney (Harris) and Robin ( Cobie Smulders) are to be married.
All she did was place the yellow umbrella on the counter, but that was the big giveaway.
Harris had met Milioti when he hosted the Tonys and she was nominated for "Once."
"I am a real big fan of anyone making that transition" from stage to TV, Harris says. "It is such an amazing transition to do theater and musical theater to do it with specificity and nuance only bodes well for 'How I Met Your Mother'."
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