This 3D version of the character was made by Fei Liu using ZBrush.
3D Character Artist Fei Liu continues the series of marvelous stylized character models with yet another amazing portrait. This time, the artist unveiled a stylized 3D version of Cyberpunk: Edgerunners' Lucy, the anime's deuteragonist and the love interest of the main character David Martinez. According to the creator, this version of the beloved character was made using ZBrush and Photoshop.
And here are some behind-the-scenes shots shared by the artist: