I am a child (it should be - un enfant)
"je suis une dolly" means "I am a 'dolly'". Dolly is an English word, not French.
Un enfant parfait (masc.), une enfant parfaite (fem.) means "a perfect child" in French.
"Je suis une alouette" means "I am a lark" in French. It is a phrase used to convey a sense of lightness or carefreeness.
'je suis' means I am (not j'ai suis) and 'une soeur' means a sister (NB 'une' as sister is feminine)
etudiant for a high school student or eleve for an elementary student.
je suis une étoile means 'I am a star' in French.
"Je suis une étudiante" translates to "I am a student" in English.
Carla Bruni composed the music and wrote the lyrics according to virgin music.
I am a girl.
"I am in a..." It's not a complete sentence.
I am a gourmet chef.
"I am a wonderful girl."