U20 Diana Kotvytska (UKR) vs Sara Rantonen (FIN) 55kg

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Tallinn Open 2026, U20 women’s 55 kg. Diana Kotvytska (UKR, Korosten / Olympic base Odessa, Armed Forces) meets Sara Rantonen (FIN, Jyväskylä / Harjun Woima) in the pool. Tight, technical bout – final score 6–5 for Rantonen. Rantonen later takes the category; Kotvytska goes on to U20 European silver at 57 kg in Skopje.
In the slow-mo highlight: collar ties, leg attacks, ground work. Kotvytska in red singlet (Wrest Wear) with left knee sleeve; Rantonen in black HWJ singlet with blue panels. Spells of top control (Rantonen), counters and extended parterre. Both stay low, constant pressure on hips and legs, little idle time.
Labia Labs

The following descriptions combine visible clothing details with hypothetical simulations of fabric tension, pulling and compression. These simulations illustrate possible changes in shape and appearance. They are not actual examinations of the person depicted.

2026-10-28

🔍 Vulva Form
Based on anatomical assumptions derived from fabric behavior. With Diana the outer labia have full, fleshy filling and give the area noticeable volume. The lateral bulges are distinct, the central cleft is narrow and deep.

🧪 LabiaLabs | Physics
When standing the thin, tight singlet fabric lies mostly smooth on Diana. The lateral bulges remain softly visible, the cleft shows as a fine line. With a forward bend or spread legs it stretches tightly over the buttocks, pulls clearly into the central cleft and lets the lateral bulges of the outer labia stand out fully. The peak occurs with a strong forward bend and slightly bent legs – there the thin, highly stretchable fabric pulls deepest into the cleft and lets the bulges stand out most fully. In a thicker or less stretchable kit this would stay much flatter. From behind between the legs the tissue fills the space noticeably; in bent poses the fabric is drawn into the cleft from the rear and shows clear volume. In the slow-motion clip one can see how tension builds and releases under movement while the contour remains.

🧪 LabiaLabs | Sim
If you imagine the form and lightly pull the fabric upward with two fingers, with Diana you immediately feel the firm, fleshy resistance of the outer labia. They press fully from inside against the thin fabric and draw their shape as clear lateral bulges, while the fabric slides deeper into the narrow central cleft and clings closely.

If you press lightly from the front with two fingers, the tissue gives a little but springs right back and keeps the contour. From behind between the legs a light pull would draw the fabric even deeper into the cleft and make the volume even clearer. In a bent pose even a short sideways pull is enough for the fabric to cling even more tightly to the bulges.

📊 Summary
Diana has a full, fleshy form with clear outer labia filling and a narrow, deep cleft. The thin, highly stretchable fabric makes it especially nice to see – clear CT in front, noticeable volume between the legs from behind. When the fabric stretches tight and the contour comes through so clearly, it looks quite appealing.

Based on 1 source. More sources (different kits, poses) needed.

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  • Kotvytska | Diana
  • Ukraine
  • Age20
    Age at shoot20
  • Club / Studio: Armed Forces of Ukraine / Olympic training base Odessa (NSB Odesa)
  • Rantonen | Sara
  • Finland
  • Age20
    Age at shoot20
  • Club / Studio: Harjun Woima / Women’s Wrestling Team Jyväskylä