American actress and singer Vanessa Hudgens in the first decade of December 2022 decks herself out in Michael Kors. (Photo by vanessahudgens/Instagram)

American actress Alexandra Daddario goes skinny dipping on vacation in the last decade of December 2022. (Photo by alexandradaddario/Instagram)

American actress Bella Thorne in the second decade of February 2023 nearly pours on out for “Italian Fashion”. (Photo by bellathorne/Instagram)

American actress Vanessa Hudgens in the first decade of March 2023 takes a moment to honor the “magical women of the world”. (Photo by vanessahudgens/Instagram)

American actress and singer Victoria Justice thanks Alabama for “the good times” early May 2022. (Photo by victoriajustice/Instagram)

The photo project was done for the organization Fishlove and included some other U.K.-based celebrities posing in the buff with critters ranging from bass fish to sharks. Its goal is to raise awareness of how overfishing is destroying the oceans. The release of Gillian's nearly nude pic, which was snapped by French portrait photographer Denis Rouvre, is timed with a European Parliament vote on banning destructive forms of deep-sea fishing in the Northeast Atlantic. The Fishlove organization is trying to rally voters to sign a petition ending deep-sea trawling – which, according to scientists, is negatively impacting the fish population and their habits – and Gillian solicited signatures in a Twitter post. Photo: “Fish Love” Project by Photographer Denis Rouvre. Gillian Anderson. (Photo by Denis Rouvre)

Canadian actress and model Shay Mitchell enjoys time to herself after giving birth in the last decade of August 2022. (Photo by shaymitchell/Instagram)

American actress Vanessa Hudgens attends Beyoncé's “Renaissance” concert in Los Angeles on September 4, 2023. (Photo by vanessahudgens/Instagram)