Another Celeb that's easy to channel is Katy Perry.
Costume 1: California Girl
What you need:
Blue wig
Blue sports bra
Jean shorts
[Photo via teenagefashionideals]-------DIY Cupcake Bra YouTube video:
Costume 2: Candy Buttons
What you need:
Blue wig
White tube top dress
Fabric paint in yellow, blue and pink
What to do:
Use the fabric paint to paint on the dots
[Photo via frugalfeasts]