Wearable antenna is a planner structure microstrip antenna used in Body Area Network (BAN). In this paper, one single band and two multiband wearable antennas are reported. Wearable materials like curtain cotton and polycot has been used as dielectric substrate to design the antennas. Antenna-1 is single band antenna. First order Koch snowflake fractal curve is used to obtain multiband operation. Antenna-2 is designed with curtain cotton as substrate material and polycot is used for antenna-3. The dimensions of both the antennas are kept same. The first order Koch snowflake fractal curve on a triangle provides four different resonant structures and hence it resonates at four different frequencies. Thus, the multiband operations are achieved in both the cases. The antenna −2 resonates at 1.98GHz, 2.8 GHz, 3.5 GHz and 4.38GHz and that of antenna −3 are at 2.0GHz, 2.8GHz, 3.5GHz and 4.4GHz. The antenna has been designed and simulated in MoM based simulator IE3D. Only simulated results are reported here. The experimental validation of the simulated results will be reported soon.