Alyson Hannigan looked to have had one of the most magical St Patrick's Days out there as she celebrated with her two lookalike children.MORE: 8 of Kate Middleton's most gorgeous St Patrick's Day looksIn a series of snaps on her Instagram, Alyson showed how "leprechauns" had come and transformed the $8million home she shares with husband Alexis Denisof and their two children, daughters Satyana and Keeva.Alyson's home was decorated with green streamers everywhere and a rainbow balloon arch by some lavish windows.The Buffy the Vampire Slayer star and her children also got in on the act, with Alyson wearing an all-green ensemble, completed with a cap with a clover on top that read "Lucky."WATCH: Alyson Hannigan's dog has the best reaction to.
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