That's Alexis next to Heather who is scrunched over. I've found her dancing to be really heavy this year, both on the show and on social media videos. She's a gorgeous face but she does nothing for me in the dance department!
In fact, Alexis, Christina and Briana in the back left corner to us look sluggish. If only Alexis wasn't the 2nd leader, I'd have Amber and Bridget as the two behind Heather. They'd look like a fab triangle.