Skinny and fat stripes

I'm off shopping with a friend today (well, going to the mall to let our kids play in the play area). I felt like looking sporty but casual. Stripes always feel kind of sporty to me . Not sure if the two different sized stripes really go or not.
Skinny black and white stripped t-shrit ~ Old Navy $6.99
Fat white and yellow stripped sweater ~ Target $4.98
Black Belt ~ Marshalls $6
Jeans ~ Old Navy $6
Yellow T-strap Sandals ~ JCP $11
Yellow bag ~ Kohls $20
Silver Hoop Earrings ~ Kohls $3.60