What you'll need:
Fabric: Can be a scrap, you don't need much, maybe a 6"x10" square. I have a 1/4 yard and could easily make 5-7 sets if not more.
Thread: I'd suggest against metallic as it isn't as strong and you aren't going to see it anyways. I used tan with my gold fabric since it will blend if seen. Also you'll need thread for the pearl strands, go with something that matches the pearls obviously.
Stuffing: Polyfill, or whatev. Just make sure it is light.
Pearls: For the pearl strings between the stars.
Needle: Even if you're machine sewing for the most part, you'll want a needle to hand sew the backs of the stars, sewing the clips on and doing the pearls strands.
First you'll need a pattern. I just used one of the star decorations I have in my room but to make your own simply draw out what you want at the size you want then and 1/2" all around the border of it. This works for any shape.
Now cut out your fabric (I traced around the edge of the star since it was such slippery fabric). You'll want 4 stars in total.
Match shiny side to shiny side and pin together. You'll have 2 stars ready for sewing!
And sew. I used a machine for this part but you could totes hand sew these.
Now trim the points off the stars, making sure not to cut too close to the thread. This will make turning this right side out easier.
Speaking of turning these right side out, you'll need to cut the center of on side on each star to do this. Pluck at the fabric so it separates then cut it, making the cut as small as possible while still allowing you to pull the fabric through.
Now turn it inside out. I used the looped end of a bobby pin to hook onto the point of the star and help push it out as pointy as it would go.
Now stuff. You want it fairly well stuffed, you can use the loop end of the bobby pin to help get the points stuffed.
Time to break out the needle and thread. Close up the opening you used the turn the star out.
Now sew on the hair clip. You could glue it on but you already have the needle and thread out and then you don't have to worry about the glue melting of getting in your hair on a hot day.
Now that the stars themselves are pretty much done, time for the pearl strands! I used white thread so it would match with the pearls better. Sew a few stitches right beneath the opening end of one star to anchor the strand.
Then add your pearls. I just winged it and stopped when I thought it looked right.
Then sew down on the other star at the spring end. Do at least a few stitches.
Then tie it off.
And repeat for a second string. Make sure it is a different length than the first.
And you're done! Look at that! And for about $5 you've got a set of star clips. :D