Tutorial Tuesday: Extender slip

So I bought this dress online.
I love it, but it was just a little bit shorter
than I wanted it to be.

My cousin told me about an Extender slip that I could buy from Shade.
I went to the mall to check them out,
but they no longer carry them.

I like lots of the styles over at Vintage Hem,
but they didn't have exactly what I was looking for.
So I decided to try to make it myself.
(This is not the greatest tutorial,
but hopefully you'll at least get the idea!)

I started with this $5 slip from Walmart:

And $2 worth of black fabric.

I made 2 tubes of fabric, one for the front and one for the back.
They were about 1 1/2 times the width of the bottom of the slip.
I just sewed three sides, turned it right side out, and sewed up the last side:

I also needed to add a panel to the slit in the slip:

The hardest step was gathering the fabric before attaching it to the slip.
I did a basting stitch, and then held onto one end while gathering the fabric evenly
across the entire rectangle until it was just barely wider than the base of the slip:

I pinned the gathered tubes to the bottom of the slip,
and then sewed them all together.
And yes, I did sew the black rectangles together as well.

What do you think of the finished product?

It works exactly the way I was hoping it would!
Don't you love it when that happens?!