No Photoshop was required to make her float.
During an event in Los Angeles produced by magician David Copperfield, guests could have their photo taken to make it appear that they were being levitated.
Standing on a metal support
is what makes it look really good.
I hope I don't need to point out that Mr. Copperfield was not real.
Photo Booth Trick Shows Guests Levitated by David Cooperfield, Bizbash>>