@QueenMia... Guess what! I've got a very cool idea about Olivia's first costume and I've got inspiration from Candy Crush Saga.
Remember the episode Research Reef, when she wanted to study the sharks, but she was afraid to take a look at sharks closely and after Tiffi gave her a shark hat, so she can blend in safely?
Since Olivia is marine biologist and she loves to study the marine life so much, I think that this outfit would be great and unique for her.
Thanks @MightyWolf. Sometimes, it's good to take some inspiration and from other Candy Crush Games too (especially from Candy Crush Saga were many characters like Olivia for example made the first appearance there) .
And also, I've got inspiration and from her characteristic that she is marine biologist and loves marine life so why not? I believe that this outfit would be perfect for her. It's very unique and she can explore the whole marine world without any problem.
I had one new idea for this contest: Olivia as a Calamity Jane type cowgirl. I was going to say she could be a real six-shooter with a cute bubble gun in each tentacle. But then I remembered...5 tentacles...so yeah. She's still a cowgirl. Also I can't draw toy guns.