What is the fine-grained topic of the following text: It was exciting to see my batch mates dress up and squeeze their creative juices for the shoot – variety of roles included Justin Bieber, Avril Lavigne, Hermoine Granger, a military officer, a mad scientist, Carly Rae Jepsen, Six from I Am Number Four and more! Only return the topic.
Costume Shoot with Celebrity and Character Impersonations