Alyson Hannigan and Seth Green Reunite (Photo)

Buffy the Vampire Slayer co-stars Alyson Hannigan and Seth Green reunited on the set of How I Met Your Mother today.

Green will guest in an upcoming episode.

Alyson tweeted right before posting the photo, “I’m in the makeup chair again and next to me is @SethGreen !!!!!!!!!! YAY!!!! Reunited and it feels so good!!!”

Based on the image, it appears as though the pair’s first scene together is set to happen in the past, based on Lily’s hairstyle.

Seth followed it up with an image of his own saying, “Spending the day with my favorite costar @alydenisof on #HIMYM”

Green’s episode is tentatively scheduled to air December 10th.

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