Kate has managed to lock herself out of her house while she was doing some gardening, luckily for her you are in when she knocks on and asks for a glass of water. You invite her into the house and fetch her a drink, when you return she is sat on the settee with her shirt open revealing her hot cleavage! You can't help but stare at her big natural tits, hopefully her boyfriend wont be back for a while to let her back in her own house!
