TikTok challenge – you can watch below.Reynolds posted the clip to his Instagram account, filmed in the middle of rehearsals for the Christmas movie musical he’s currently filming with Ferrell, Spirited.“Late to the ‘Grace Kelly’ TikTok trend but WAY early for our Christmas movie musical,” Reynolds wrote in the clip, which sees him start singing before Ferrell joins in.Watch the clip here:A post shared by Ryan Reynolds (@vancityreynolds)Spirited began production in July, and has been described