Combining these elements, a "Royal Blue Mermaid Evening Dress" would be a formal dress featuring a mermaid silhouette and crafted in a stunning royal blue color. The dress would be fitted through the bodice and hips, emphasizing the natural curves of the body, and then flare out towards the lower part of the dress, creating a graceful and eye-catching effect. This type of dress is often chosen for formal events, such as galas, weddings, or red carpet occasions, where an elegant and show-stopping look is desired.