She chickens out

"C'mon, I can't do this," Supergirl finally says turning to look at Superman. "Can we please just go?"

"What?" Superman asks in surprise. "No way, we paid a fortune for these tickets, you're not gonna let one little wardrobe malfunction steal the day from us are you?"

Supergirl's eyes widened. "This is not 'one little wardrobe malfunction' is it?" she argued. "My skirt's too short and I'm not wearing any underwear!"

Superman shook his head. "C'mon honey, please don't ruin this."

"No way, I'm going back to the car," she shot back, stepping out of the queue and walking back along it.