Sirens are sitting around their victims bones after luring them in with their seductive singing.
Sirens are like Britney Spears because they were both beautiful at some point.
Sirens are like Britney Spears because they both lure people or sailors in with their beautiful singing.
An unfortunate Sailor is being eaten by the Sirens
The Sirens and Britney Spears both get their way. Britney Spears and the Sirens get angry if something does not go their way. Britney Spears is a pop star that can have and probably has anything she wants, and if Sirens do not get what they want then they commit suicide.
Britney Spears and the Sirens have both changed due to traumatic life events. Britney Spears had a drug problem and even shaved her head. The Sirens were blamed when Persephone went missing and they were turned into ugly bird-mermaid creatures.