What is this style of dress called?

[BigPawsBrown]

I have had some luck by searching for kimono dresses but really what I like is the sort of big arm holes, whereas kimono dresses bring up elaborate massive sleeves and "obi" wraps. I just want a dress like the attached, which is sort of like a triangle shape? But I can't find one because I don't know what to search for!

[BikeRunSki]

Batwing sleeve

[BigPawsBrown]

Hmm typing batwing dress into asks has brought up only four results, one of which was this terrifying dress

Do you know if you walk into h&m at the moment, most of their work tops would have these big arm holes? I sound mad, but they're not bat wings, they're just a slightly different cut of normal sleeves...

[BigPawsBrown]

Bump...

[MoustacheofRonSwanson]

Try fluted/flutter sleeves

[BigPawsBrown]

Bump

[SwedishEdith]

Tent dress?

[honeycrest]

I had something like that years ago from mango. Isn't it just a belted tunic dress?

[Nettletheelf]

I thought 'tunic dress' before I read honey's post.

[coffeenut]

waterfall sleeve? reiss

[BrockAuLit]

I just think Grecian Goddess when I see that style. I have a gorgeous version in bottle green but it's really old and I can't remember where I got it from .

[PerspicaciaTick]

I googled "belted sack dress" and got a few similar things . Not sure if it was matching on the "belt" or the "sack".