The two of you had finished playing and were now sharing a bed and are about to go to sleep. You had brushed your teeth and were going to get into your pajamas. Courtney started getting dressed in front of you and you were a little surprised and was looking away as you held onto your grey pj's. Courtney went to you and asked "Why are you looking away? We're sisters right? Come on get dressed." she then grabbed your shirt and pulled it off and surprised you covered your chest a little. Courtney chuckled and said "Come on we've got nothing to hide."
You thought "Of course we've got... it's not like you've got breasts or anything." a small picture of the young Courtney with a pair of B-cups entered your mind and then you got the thought out of your mind. Looking you saw the naked Courtney now with some B-cups that looked a bit big on her.
Courtney said "I mean we're both girls right? doesn't matter if you have nothing on your chest yet!" The two of you got dressed and got into bed which felt rather hot with the two of your young bodies inside. Courtney happily was sleeping, but Ty was a little distracted. She was very close to a girl who seemed rather well endowed. Ty wished "Please don't let Courtney wake up tonight..." then curiously grabbed Courtney's breasts. Ty was enamored with the warm squishy masses and unconsciously grew them larger and larger while playing with them. She enjoyed playing with Courtney's body and ended up getting tired and falling asleep before she returned things to normal. When she woke up...