Alyson Hannigan
How I Met Your Mother star Alyson Hannigan and her family dressed up as a group of seahorses as they went trick or treating in Los Angeles last Halloween. Her husband, Alexis Denisof, wore a blue seahorse costume as he carried Keeva in a front carrier, while Satyana looked adorable in a pink seahorse costume.
Want to copy their look? Amazon has both adult and kid seahorse costumes that range from $17 to $65.
Next up: Bethenny Frankel’s adorable Hello Kitty costume
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