Prepend and slidedown

I have a script which checks for new rows and prepends them to the top of the list.

I would like the prepend to be nicer.

Perhaps with a slide-in and fade. As well as slide down the others that are already in the list.

Currently I have this:

function prepend(rowData) {
  $(".div").prepend(htmlData);
}

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but it is very clunky.

Could anyone help with some nicer looking animation.

Thanks

Steve