Lightweight fabrics. Forgiving waistbands. Affordable options everywhere. What’s not to love about maxi skirts for summer? This perennial warm-weather staple is a favorite for celebrity moms, too, from Jessica Alba (wearing Ella Moss, top left) to supermodel Alessandra Ambrosio (in the tie-dye) to rockstar Gwen Stefani (bottom left). Just toss on a tank top and some flip-flops and you’re good to go.