also: スリー・サイズ
noun
bust-waist-hip measurements; vital statistics
Wasei-eigo from English 'three size'; refers specifically to a woman's three body measurements (bust, waist, hips).
wasei-eigo (Japanese-coined English), from three size
モデルのスリーサイズが公開された。
The model's bust-waist-hip measurements were made public.
スリーサイズを測ってもらえますか。
Could you measure my bust, waist, and hips?
Wasei-eigo from English 'three' and 'size'. The exact derivation is uncertain, but it is a Japanese coinage for the three key body measurements.