Snip, twist, wrap, and knot. That's all that separates you from a new poolside outfit. Blueprint fashion editor Katie Hatch says, "I know what you're thinking: Why make a bathing suit? And my answer: It costs less than $20!"

Web-Exclusive Slideshow: Simple Suit How-To

Web-Exclusive Slideshow: Twist-and-Tie Suit How-To

Bandeau Swimsuit How-To
1. Make your pattern (instructions on following page) using our template.

2. Fold a yard of spandex in half width-wise on a smooth, flat surface. Fold 1/3 yard of a piece in a complementary color in half widthwise and lay it over the first piece, at one edge.

3. At the fold, pin the top's pattern through both colors, the bottom's through one, then cut.

4. Tie the bottom in a double knot at both hips and tuck the ends under.

5. Holding both layers of the top, twist it, wrap it around your chest, and double-knot the ends in back.

Material: Lycra/spandex, $8 per yard, Mood Designer Fabrics, 212-730-5003

Cover-Up How-To

1. Print the pattern pieces; tape them together and cut them out.

2. Fold 1 1/2 yards of sheer fabric, such as chiffon or organza, in half lengthwise, then again width-wise. Lay it on a smooth, flat surface.

3. Pin on the pattern and cut with pinking shears.

4. Unfold the fabric and slip it over your head as you would a poncho. Let the sides overlap a few inches, wrap 1 1/2 yards of cord around your waist, and tie.

Materials: Cord, $6 per yard, Mokuba, 212-869-8900; Silk organza, $35 per yard, Mood Designer Fabrics, 212-730-5003

*Katie Tip: If you would to make a longer cover-up, buy an additional 1/2-1-yard of fabric. Follow above directions. Add the length between rows B and C on our pattern.