Qui peux m'aider a écrire un mail en anglais ? On doit décrire un événement et le présenter avec des date etc

Dear Emily,
Monday,21 September 2015 it was the best day of my life because my and my friends was at the swimming pool and after that we go to do shopping and when we star to do shopping at gap boutique we see beyonce with her daughter her name is Blue Ivy and she was soo  cute and after that we go to old navy boutique qnd with our surprise we see Mr Barack Obama he was with his 2 daughter Malia  and Sasha and after shopping we go at my house and this day was the best day of my life because we see a lot of stars  
your friend Pauline