BR has basically covered this.
IMHO it is a grey area.... if it is her Escorting Number and the profile pic has been put there for punters to see, then posting that photo would be allowed.
However, I quite often find that the number quoted on a lot of profiles are their own, cos when you bring up the same number in your whatsapp chat, you can see private photos of her which she would not have posted on AW or in her profile, if she had jnown that punters can see this pic without her knowledge.
Will get Admin to look at this, in case they wish to amend/edit the rule for WhatsApp pics.