I am having difficulty finding the clip on 4OD.
There are photos here: http://www. wikifeet.com/Stephanie_Davis
Someone comments on the photo on April 28th. Searching "Hollyoaks foot massage" in Twitter returns one result on April 24th mentioning it. I have checked the episodes around this...
Here:-
http://www.youtube.com/ watch?v=MrWHgQadAws
2 Men and 1 woman foot tickled with a feather duster (you can't see the tickling, just the reactions).