The not so little mermaid:
In exchange for new her human legs, Ursula the sea witch trades with Ariel her mermaid appearance instead of her voice.
In the pic we see Ariel (Ursula in Ariel's body) as a mermaid in her room (under the sea), with bigger breasts and new pair of sea shells bikini that enhance her curves, combing her hair sitting in front of an underwater cabinet with a mirror. The mirror's reflection shows us that Ariel is in reality Ursula in her Ariel's body.
Ariel have more skanky makeup, and smirks with an evil grin when she looks at her in the mirror. Nobody knows that Triton's little princess is the feared sea witch in disguise.