Candy, about a a real life murderer called Candy Montgomery, fans of Jessica Biel have been witness to the incredible transforamtion she underwent to portray her.ALSO: HELLO! launches Jubilee T-shirt collection to celebrate Queen Elizabeth in styleNow, the star left her followers even more surprised when a special someone tagged along for an unexpected appearance that is giving her own transformation a run for its money.While her transformation was certainly impressive, her husband Justin Timberlake's own transformation gave her some serious competition.WATCH: The trailer for CandyMORE: Jessica Biel stuns in white alongside Justin Timberlake for special outingThe singer sparked a major reaction among fans of his wife and viewers of the show when she revealed how he had also transformed himself for the series, leaving him absolutely unrecognizable.The actress took to Instagram to show the surprise appearance, where fans saw the couple in character, her in Candy's signature short curls and an old-school blue outfit while Justin looked like he had aged himself ten years in a gelled hairstyle and retro suit. She cheekily captioned the post with: "Watch out, Candy.