The girls lives have changed drastically in the last 17 years.
The kids drove Hanna mad at times. They were maniacs, but they were her maniacs, and she wouldn't have them any other way.
Emily never imagined her life would end up like this back in high school, her life is perfect and nothing could ruin it.
Every day Spencer thanked her lucky stars for the amazing job, home, husband, daughter and son she had been blessed with. They are her world and she would spend every waking minute, if she could, proving that to them.
If you had told Aria when she was 16 that she would marry her high school English teacher, and they would have adopted four beautiful babies together she would have thought you were on drugs. She was the happiest she had ever been in her life, and nothing could bring her down from it.
The now 41 year olds have to juggle work, friends and family.
Are their lives perfect?
Are their lives plain sailing?
The short answer: no.
Because you never know What Happens When...