Anodite

With a deep breath, Ben selected the Anodite symbol and prepared for the transformation. A surge of energy pulsed through him as the Omnitrix beeped, a wave of pink and purple light enveloping his body. There was the usual sensation of shifting and reforming, of his body adapting to the form of an alien species.

Ben opened his eyes. His field of vision was filled with glowing strands of energy that seemed to flow from his head. He reached up, fingers brushing through the radiant energy that acted as his hair, feeling a strange sensation as he did. The strands danced at his touch, a swirl of brilliant, bright pink energy that shimmered in the light.

His body was another story. A quick glance down confirmed that he'd remained female, the curves of his new form more pronounced and vibrant in the ethereal glow of the Anodite body. His skin was a dark purple, shifting and flowing as though it were made of the same radiant energy that made up his hair.

A peek at the Omnitrix showed that it was now situated at the base of his chest, just above the valley formed by his new, generous bust. He blushed, hands instinctively coming up to try and hide it. As an Anodite, he didn't wear any clothing. The alien form seemed to be more about energy and less about physicality, but still, he felt a bit exposed.

"Oh wow, Ben," Gwen couldn't help but giggle at the sight, a teasing smirk on her face.

"You look just like me when I turned into an Anodite! But uh... A little bit more... Top heavy?"

She snickered.

"Can it, Gwen!"

Ben's voice echoed, more melodious and ethereal than before, tinged with a hint of embarrassment. His tone more high pitched now than before.

"But it's true. I might have to have a word with Azmuth about his depiction of female races though..."

"Get in line! Why would these even be options to begin with?"

Ben groaned again, waving her off, his hands leaving a trail of sparkling energy.

"Just... let's figure out how to fix this. And no more jokes, okay?"

Gwen nodded, still stifling her laughter.

"Alright, alright. No more jokes. Let's see if we can't get you back to normal... well, your version of normal."

"Okay, well, the good news is I have the omnitrix symbol and it's not on my wrist so I'm pretty sure I am in alien form right now. When the time runs out I should turn back to normal, not Starfire..." he hoped.