OK, I have never heard of this celebrity (perhaps due to the absence of a TV in my house) BUT it appears there were claims of her being a Muslim. LM have cleared this one up by linking to a tweet. Jameela Jamil confirms she is not a Muslim:
@afra_chaudhary no i don't mind you asking at all! I'm not a muslim. Just wasn't brought up with any religion at all...xxx
She is of Bangladeshi origin (as well as her name) BUT it is not true. She is not a Muslim.
Muslims in the Bible - Ali Ataie
Ali Ataie | Jesus in Islam | February 28, 2014
Christians having dreams and converting to Islam
Learn about Islam
Invitation to Islam
Jesus taught people to do the Will of God (according to Mark 3:35) in order to become his brothers, mothers or sisters. A Muslim means one who submits to the Will of God. Do you want to become a brother of Jesus? If yes, become a Muslim.