Kiera Jaston
Also known as Kiera Jane Aston, KJ, The Muscle Barbie, Themusclebarbie
Career
Active 2018 – present
Biography
About Kiera Jaston
Standing 5'4" and weighing 169 lbs, Kiera Jaston carries a muscular frame that is both powerful and sculpted. Her measurements are 36–25–37 (B–W–H), a combination of enhanced breasts and a thick, dense physique developed through years of competitive powerlifting and bodybuilding. She is 30 years old, born on October 23, 1995, in the United Arab Emirates, though she identifies as British and currently bases herself in the United Kingdom.
Kiera is a hybrid athlete: she competes as an IFBB Pro League bodybuilder in the Wellness division and as a competitive powerlifter. She originally competed in the Figure division before switching to Wellness, where her heavily hyper-trophied glutes and quad development are standout features. She is widely celebrated as one of the strongest pound-for-pound female pullers in the world. Her raw deadlift in training reached 275 kg (606.3 lbs), which is 3.57 times her body weight. She can also bench press up to 145 kg (320 lbs) and regularly reps out 240 kg (529 lbs) deadlifts for sets of 4 to 5 reps. She is working toward a 300 kg (661.4 lbs) pull at 75 kg body weight.
In addition to her athletic career, Kiera works as an adult model, fitness model, influencer, and dominatrix. She performs solo nudity and also appears in girl-girl and boy-girl scenes. As an influencer, she has amassed 398k followers on Instagram, where she posts fitness and lifestyle content. She is also active on TikTok and YouTube under the handle @kierajaston_fitness. She is an independent athlete and model, and she operates her own coaching platform for live and online sessions. She is a sponsored athlete for TBJP Nutrition (Trained by JP) and Conteh Sports, and she has been featured in strength media outlets such as Breaking Muscle and Fitness Volt. She earned her pro card at age 21, making her Europe's youngest IFBB Figure Pro at the time. Kiera is bisexual and has a tattoo collection spanning her arms and torso.
Record
Profile details
Personal
- Years Active
- 2018-present (started around 22 years old; 8 years active)
- Birthplace
- United Arab Emirates
- Ethnicity
- Caucasian
- Sexuality
- Bisexual
Body
- Hair Color
- Blonde
- Eye Color
- Brown
- Weight
- 169 lbs (or 77 kg)
- Measurements
- 36–25–37 (B–W–H) · WHR 0.68
- Boobs
- Fake/Enhanced
Performances
- Solo
- Nudity (Full)
- Girl/Girl
- Kissing
- Boob Touching
- Boob Licking
- Fingering
- Dildo
- Oral
- Boy/Girl
- Blowjob
- Vaginal
Extra
- Instagram Followers
- 398k (as of May 2026)
Frequently asked
How does Kiera's bodybuilding career connect to her powerlifting achievements?
Kiera competes in the IFBB Wellness division, which favors heavy lower-body development, and her powerlifting background directly supports that. Her raw deadlift of 275 kg (606.3 lbs) is a key part of her strength resume, and she regularly works with 240 kg (529 lbs) for sets of 4–5 reps.
What makes her 275 kg deadlift particularly notable?
That pull is 3.57 times her body weight, a ratio that places her among the strongest female pullers on a pound-for-pound basis. She is working toward a 300 kg (661.4 lbs) pull at a body weight of 75 kg.
What is her background in the IFBB?
She earned her pro card at age 21 in the Figure division, making her Europe's youngest IFBB Figure Pro at the time. She later transitioned to the Wellness division, building a heavier and denser silhouette.
Did you know
- Kiera's 275 kg (606.3 lbs) raw deadlift is 3.57 times her body weight of 169 lbs.
- She won her IFBB pro card at age 21, becoming Europe's youngest IFBB Figure Pro at that time.
- She is a sponsored athlete for TBJP Nutrition and Conteh Sports, and has been featured in Breaking Muscle and Fitness Volt.
- Kiera's body measurements are 36–25–37, and she has a muscular body type.
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