Making a flex item float right

I have

.parent {  display: flex;}

<div class="parent"><div class="child" style="float:right"> Ignore parent? </div><div> another child </div></div>

For my first child, I want to simply float the item to the right.

And my other divs to follow the flex rule set by the parent.

Is this something possible?

If not, how do I do a float: right under flex?