The 23-year-old, who last posed in bikinis for a calendar shoot, has now learned underwater swimming.
She will be seen swimming gracefully under water like a mermaid wearing an embellished top for the covershoot.
"Having to shoot underwater is a completely different thing altogether. It's difficult to hold your breath for long periods while making it look natural and beautiful, while also making sure it doesn't look like you're holding your breath," Angela said in a statement.
"The first day of shooting was a bit difficult as it took us some time to warm up and get comfortable, but we had lot of fun during the shooting," she added.