I'll check on 4oD later but when I glanced up they looked like 'stunt' tits as you never saw the face and rack at the same time. Like Billie Piper did in that 'Confessions of a Prosi' programme.
Having watched shameless from the very first series, it feels a bit wrong - having seen her grow up shes almost like your mates kid sister or something
That other one who shags Carl looks like pure filth though