She has no waist.

她胖得看不出腰身来。

《新英汉大辞典》

I belong to a flat shape, have very thin, but why no waist?

我是属于扁平的身形，已经很瘦了，可是为什么没有腰身呢？

youdao

Jacket and coat had a wide cut, broad padded shoulders and no waist.

外衣和人衣都裁剪得比较宽松，肩部垫得很宽，不收腰。

youdao

Now, between your waist and your shin guard there's some very delicate territory, and there's no armor.

在你的腰和护胫之间,这部分身体很容易受伤,因为这部分没有防具

耶鲁公开课 - 古希腊历史简介课程节选

At the very end he's tried to jump and his hand is just slightly above his waist but no more than that.

BBC: Derek McInnes angered by penalty award

He has the WWE title belt around his waist and a No. 1 movie to prove it.

WSJ: The Rock is ready to roll as WrestleMania nears

The 34-inch waist hung straight and level over my hips with no need of a belt, although my belt slid through the loops of the new pants perfectly.

FORBES: My Ethical Dilemma