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Shelby Brewster is a California-based motherhood and fitness creator who blends marathon training, coaching, and realistic postpartum routines with relatable day-in-the-life content. She’s a strong partner for health, wellness, activewear, hydration, and lifestyle brands looking to reach an engaged audience that values practical, trustworthy recommendations from a busy mom who still makes time to move.
ᨒ Running, hiking, & outdoor adventures ☼ 26.2 x 3 (PR 3:22) | BQ x 2 @nikestudios Trainer 💌:
New to athlete partnerships? See how sports sponsorship works on OpenSponsorship.
1 post & 1 story with the Shelby Brewster promoting your product.
Long-term deal involving appearances, photoshoots, social media and more.
Have Shelby Brewster make a live appearance at your next event
Brands can sponsor Shelby Brewster on OpenSponsorship by creating a free account, browsing Shelby Brewster's profile, and sending a sponsorship proposal for social posts, appearances, or integrated campaigns. OpenSponsorship handles messaging, deliverables, and deal terms in one platform so you can connect directly with this content creator.
Shelby Brewster is listed on OpenSponsorship and available for brand sponsorships. Brands can review campaign packages, audience details, and pricing on this profile, then submit a proposal to start a partnership with this content creator.
According to OpenSponsorship, estimated pricing to sponsor Shelby Brewster starts at $1,800 for a social media post, $2,700 for a appearance and $16,200 for a brand ambassador campaign. Final rates depend on deliverables, usage rights, and campaign scope. Sign up on OpenSponsorship to view packages and send a proposal.
According to OpenSponsorship, Shelby Brewster's audience includes 36K+ Instagram followers, interests including Health & Wellness, Fitness & Performance, Cooking, Fitness, Swimming, and more, based in CA, United States. Brands can use this profile to evaluate reach, content niche, and sponsorship fit before sending a proposal.

How do you measure influencer marketing ROI when half the numbers social media gives you are vanity metrics? It is the question brands ask us most, and it came up again when I joined Massimo Marinelli on the Berkida Ventures Podcast. After more than ten years and thousands of brand deals with athletes and creators at OpenSponsorship, here is how we think about it, and the framework we use with our clients.
October 28, 2026