Kayla Itsines — the world’s richest fitness influencer, creator of the Bikini Body Guide (BBG), and co-founder of the Sweat app — built the most financially successful fitness brand ever created by an individual trainer. Born August 21, 1991, in Adelaide, South Australia, she went from training her sister’s netball teammates to a $63M+ net worth and a $400 million app sale.
| Name | Kayla Itsines |
| Profession | Personal Trainer, App Founder, Author, Entrepreneur |
| Date of Birth | August 21, 1991 |
| Age | 34 years old |
| Birthplace | Adelaide, South Australia, Australia |
| Nationality | Australian (Greek heritage) |
| Net Worth | $63 Million+ |
| Partner | Ben Pearce (engaged 2023) |
| Kids | Arna Leia Pearce (born May 2019) |
| Marital Status | Engaged |
Who is Kayla Itsines
Kayla certified as a personal trainer at 18, developed her HIIT methodology, and launched the BBG program as a 12-week PDF in 2012 that became a worldwide fitness phenomenon. She co-founded the Sweat app which was sold to iFIT for $400 million in 2021 — the largest fitness app acquisition in history. Time magazine named her one of 100 Most Influential People; Forbes listed her among highest-paid Instagram celebrities multiple years running.
Body Measurements & Athletic Stats
| Height | 5 ft 4 in / 163 cm |
| Weight | ~57–61 kg |
| Eye Color | Brown |
| Hair Color | Dark Brown |
| Bust – Waist – Hips | 34 – 25 – 36 inches |
| Body Fat % | ~18–22% |
| @kayla_itsines (16M followers) |
Kayla Itsines Latest News (May 2026)
- 🔴 WORLD’S RICHEST FITNESS INFLUENCER: Kayla retains her position as the world’s wealthiest fitness influencer in 2026 — net worth exceeding $63 million.
- Sweat App Legacy: The Sweat app remains one of the most used women’s fitness apps globally in 2026 after its $400M acquisition.
- BBG Community: Tens of millions of global BBG members continue to drive massive organic engagement in 2026.
- Engaged to Ben Pearce: Kayla got engaged in 2023 to personal trainer Ben Pearce — brother of her ex-partner Tobi Pearce — making their relationship one of Australia’s most discussed.
- Talk of the Town: Her $400M app exit remains the benchmark for fitness tech valuations globally in 2026.
Net Worth
Kayla Itsines’ net worth exceeds $63 million — from the $400M Sweat app sale, BBG program, Instagram sponsorships, book deals, and speaking engagements.
Height
5 ft 4 in (163 cm).
Birthday
Born August 21, 1991, Adelaide, Australia. Currently 34 years old.
