The 22-year-old model stars in the brand's new ads for its late summer campaign.
The professional makeup artist and Upton first unveiled their upcoming joint project during an appearance on Good Morning America in March.
"Excited to work w @KateUpton as new face of @BobbiBrown," Brown tweeted at the time. "She's beautiful, confident & creates her own rules."
In addition to being the face of the cosmetics brand, Upton is also a spokesperson for Express and Sam Edelman.