2. Bella Thorne as Ariel

While we'd also love to see hipster Ariel brought to life, we're thinking that the Internet meme has become too mainstream. So let's just stick with casting a redheaded Disney star as the finned princess who introduced us to a new styling tool known as the dinglehopper. This "Shake It Up" actress has that wide-eyed, inquisitive look that's a must for playing the little mermaid, and she can also sing. Bella's Disney series has been cancelled, so she'd probably love to get a chance to make the move to blockbuster movies by playing the popular mermaid princess. However, she'd have to work really hard to top JoAnna Garcia's awesome Ariel portrayal in "Once Upon a Time."