I used to do this to my girls' jeans after school let out. Great way to boost the summer wardrobe for next to nothing! Transform an old pair of jeans into adorable summer shorts using bias tape. Instructions on the site.
Repurpose a men's button down shirt into simple toddler shift. Trace existing dress as pattern adding margin for seam. Cut out pattern Sew together for simple dress Notes: the buttons make up dress back
Make for Baby: 25 Free Dress Tutorials for Babies & Toddlers