jquery append to front/top of list

I have this unordered list

<ul>
   <li>two</li>
   <li>three</li>
</ul>

Is there a way I can prepend to the unordered list so that it ends up like this?

<ul>
   <li>ONE</li>
   <li>two</li>
   <li>three</li>
</ul>

Notice the "ONE" is added to the FRONT/TOP of the list.