Inscribed with the phrase Lucky You, the etching features an outline of the traditional symbol of good luck surrounded by a series of stars, the Daily Mail reported.
Holding up up her grey T-shirt, the 27-year-old actress showed off her brand new accessory, which she opted for while in Paris, France, last week.
The actress commissioned French tattoist and graffiti artist Fuzi Uvtpk to create the inking for her after recently attending an exhibition of his work at Le Salon.
Johansson already has several tattoos. She recently got a tattoo tribute to New York City on her wrist with the words 'I Heart NY' written. She also has a sun rising over the sea design on her left forearm, while on her ankle she has two circles interlinked with the letter A.