Add a sibling div to Ember Form For input element

I am using Ember Form For and I want to know if it is possible to add a sibling element.

Currently doing this:

will render this:

<div>
  <label><input type="radio" value="female" />Female</label>
</div>

I need a container sibling element which I can add CSS pseudo classes to. I am unable to target parent containers of the input hence why I need a sibling element. So something like this is what I am after:

<div>
  <label>
    <input type="radio" value="female" />
    Female
    <div class="someClass></div>
  </label>
</div>