Transforming into Santa and Mrs. Claus takes months, cash and cupcakes: It ‘makes me feel alive’

Jennifer Harrison really digs her Claus into Christmas.  

Ditching her naturally blond locks for snow white tresses, rocking Christmas-berry red nails and velveteen vestments to match, the 60-year-old New Yorker is Mrs. Claus.  

“Putting on that costume makes me feel alive,” Harrison, a full-time portrayer of Santa’s wife, told The Post. During the latter half of the year, the mom of one and author spends two hours each day getting into Mrs. Claus glam, gearing up to inspire hope for the young and young at heart in Gotham.

“When I’m Mrs. Claus, everything is magical,” said Harrison, “whether I’m spreading joy at St. Patrick’s Cathedral or down in the subway.”

“Even the rats are adorable.”

But for everyday folks like Harrison, metamorphosing into North Pole nobility, be it Mrs. Claus or her holly jolly hubby, doesn’t just happen in the twinkle of a reindeer’s red nose.