Demi is a powerful puncher! She left Alex Welch black and blue after hitting her in the face on a private jet in October. TMZ reports these photos were taken days after Demi punched her Alex Welch. A source close to the dancer said..
..Alex was minding her own business on a private jet leaving Bogota, Colombia when Demi ‘walked up to Alex and with a closed fist, struck her on the left side of her face.‘
The punch was so strong that Alex was knocked right out of her seat and had to receive emergency medical attention. Demi was immediately removed from the plane. Alex is ‘considering her legal options.’ More closeups @ TMZ!