Align text after pics

It is a theme specific issue. Name your theme, post a link – if you want real help.
And before all: check you style.css – the reason must be there.

Stardust v1.0

https://themes.wordpress.net/columns/2-columns/3636/stardust-v10/

Anyone?

As I said: it is in your stylesheet – all post images are set to float to left… which means the text will wrap around them.

Edit your stylesheet and remove the floating from
.post img

or pick another theme.