Hailey Rhode Baldwin was born in Tucson, Arizona to actor Stephen Baldwin, the youngest of the Baldwin brothers, and graphic designer Kennya Deodato Baldwin

Her mother is a Brazilian of Italian and Portuguese descent, and her father is of English, Irish, Scottish, French, and German descent

Baldwin's maternal grandfather is the Brazilian musician Eumir Deodato. Baldwin was homeschooled as a child

She attended American Ballet Theatre in New York through her teen years.Baldwin was named after Halley's Comet

The first modeling agency Baldwin signed with was Ford Models, appearing in magazines such as Tatler, LOVE, V and i-D. Her first commercial campaign was for the clothing brand French Connection in the winter of 2014

In October 2014, Baldwin made her runway debut walking for Topshop and French fashion designer Sonia Rykiel

In December 2014, she was involved in a photo session for Love magazine, which also produced a short movie shot by photographer Daniel Jackson and released on the magazine's official YouTube channel

In January 2015, Baldwin was photographed for American Vogue and in March for Teen Vogue. In April, she shot her first magazine cover for Jalouse Magazine alongside male model Lucky Blue Smith

In the same month she was involved in two further cover-shoots, for the Dutch edition of L'Officiel and the American edition of Wonderland Magazine 

She was also pictured in editorials for Miss Vogue and W magazines. In July 2015, she was featured in Ralph Lauren advertising alongside Australian singer Cody Simpson, and in October returned to the runway for Tommy Hilfiger and Philipp Plein

In January 2016, Baldwin appeared in a Ralph Lauren campaign and shot an editorial for the Korean edition of Vogue

After walking again for Tommy Hilfiger in February, Baldwin featured in spring/summer campaigns for Philipp Plein and Tommy Hilfiger

In the same period she was also shot for Self Magazine[26] and filmed for a commercial of clothing brand H&M, which was released in the Coachella Music Festival period in April