Potential contestants hit the runway and compete to see who can take the best selfie; Miss J returns to the judging panel.

Semifinalists model various seasons in a limited amount of time during a rigorous subway challenge; a nighttime photo shoot at the beach gets steamy.

Tempers flare and relationships ignite as the 14 contestants move into their new home; the models compete in a runway challenge wearing only silly string; behind-the-scenes look on the rain-themed intro.

With a love triangle brewing in the house, not all models bring their A-game to an optical illusion photo shoot. The eagerly awaited make-over day arrives, and one model to unveils a never-before-seen look while another suffers a breakdown.

Tyra helps the models prepare for a sexy photo shoot; unexpected chemistry sparks between two models before a challenge involving stilts; a model breaks a house rule after a night of partying.

The models are tasked with mastering the ultimate hair whip for a wind-blown photo shoot. One girl is given a penalty and is allowed only five frames to capture the perfect image. Later, Nick Cannon gives the models a chance to be the face of his new ad campaign.

The contestants audition for a walk-on role on a TV show; hurtful comments lead to an icy photo shoot.

A photo shoot challenge leads two models to realize they need to put their personal relationship aside; the models discover common ancestry links during a futuristic sci-fi photo shoot.

After a private runway session with Miss J, the models must book fashion shows with designers including Betsey Johnson; models are paired up during a photo shoot for a hair product.

An eliminated model returns to the competition; the models must keep their composure during a challenge at a former slaughterhouse with a dark history; a fashion shoot with a focus on HIV and AIDS awareness.

A recap of the competition so far.

The models travel to Seoul, Korea, where they take part in a group dance shoot judged by BtoB; a bad habit limits one model's potential for success.

During a timed challenge, the models race to locations in Seoul; a models winds up isolated after getting caught in a lie; a confrontation occurs between a model and Yu Tsai.

The five remaining models perform a scene with Korean soap opera actors before dressing up to re-create iconic images of Elvis Presley and Marilyn Monroe.

Tyra introduces the final four models to her cosmetics line and challenges them to a commercial shoot with help from some of the previously eliminated contestants. Later, the models participate in their last photo shoot.

Cycle 21 concludes with the remaining three models participating in a final runway fashion show in Seoul for designer Lie Sang Bong. Later, Tyra reveals the winner. Kpop band 2NE1 perform.