Tatiana Ringsby (she/they), better known as Tatchi, is a Brazilian-American model, actor, and influencer who has garnered over 2 million followers across social platforms. Their debut feature, "She’s the He" premiered at SXSW in 2025, and is currently in select theatres. She is also recurring on Chicago Fire as Heidi Novak. Tatiana has appeared in music videos such as Zolita's viral Somebody I F*cked Once trilogy, which went to SXSW as a selection for the music video competition. Tatchi creates photo and video content surrounding fashion, LGBTQIA+, surf/skate, and lifestyle. Tatchi grew up in Maui, Hawaii, and now lives and creates in Los Angeles, CA.