Texture:
* As soft as a baby's breath (classic and gentle)
* As soft as a cloud (light and airy)
* As soft as velvet (luxurious and smooth)
* As soft as silk (smooth and flowing)
* As soft as a feather (light and delicate)
* As soft as down (fluffy and warm)
* As soft as a kitten's fur (gentle and inviting)
* As soft as a summer breeze (gentle and calming)
Feeling:
* As soft as a warm embrace (comforting and loving)
* As soft as a whisper (gentle and quiet)
* As soft as a lullaby (soothing and relaxing)
* As soft as a dream (unreal and ethereal)
Appearance:
* As soft as a rose petal (delicate and beautiful)
* As soft as a snowfall (peaceful and pristine)
Ultimately, the best simile depends on the specific context and what you want to convey.