Sabrina Costello

Real. Sabrina Costello is the youngest of the three Costello sisters behind Vancouver swimwear brand Strawberry Milk Mob, where she goes by the fruit-themed nickname "Blueberry" (alongside Georgia as "Strawberry" and Sydney as "Coconut"). The sisters started the brand together in their basement in early 2018, and Sabrina has run its individual "Blueberry" TikTok and Instagram presence — part of the trio's combined 3.4 million followers — since the accounts split off from the main @strawberrymilkmob page. Her own family's podcast is first-party evidence of her existence and voice: the show's official Apple Podcasts description reads "Get to know Georgia, Sydney and Sabrina better," and Episode 10, titled "Blueberry in the HOUSE," is built around her — "the girls talk about growing up, working together, and all things sisterhood." That episode is also posted as a video on the sisters' own YouTube channel, @StrawberryMilkPod, independently confirmed as the uploading channel via YouTube's own oEmbed data. A swimwear-industry trade piece (myswimlook.com, byline Alessandra Caruso, published Nov. 20, 2024) profiles her individually, describing her as having "the driest humor" of the three sisters — "rarely the butt of the joke but frequently the teller of them" — and naming her personal handle, @sabrinacostello. Shopify's own editorial Substack, "In Stock" (byline Kristina Caracciolo, Mar. 30, 2026), separately names her as a co-founder who helped work the brand's Soho, New York pop-up that drew nearly 2,000 people in line, and confirms her individual TikTok account as @blueberrymilkmob. Her accounts cross-confirm each other. The main brand account, @strawberrymilkmob, publicly tagged her personal Instagram in a post captioned "SISTER #3 where r you @sabrinacostello," and her own Instagram bio (🍓🫐🥥) references both the main @strawberrymilkmob account and her own @blueberrymilkmob handle — a reciprocal, first-party confirmation that both accounts belong to the same person. People search her name because Strawberry Milk Mob's TikToks rack up huge view counts and viewers want to know if the sister behind the "Blueberry" persona is a real person — she is a documented one, distinct from her sisters, with her own named press coverage and first-party podcast appearances. This page is unclaimed and compiled from public sources.