The designers create looks inspired by old Hollywood glamour for Khloé Kardashian to wear at a Grammy Awards after-party. For the first time throughout the construction process, the designers receive no direction from the mentors. Instead, they must critique each other's work and use the lessons they've learned so far to guide themselves. Recording artist Ne-Yo is guest mentor.

The remaining four designers must create complementary looks for power couple Naya Rivera and Big Sean for his record release party. She wants an exposed midriff and asks that Sean's style move beyond his typical white t-shirt and jeans. But how will the designers create two looks in so little time? Help comes in the form of some very special project assistants.

The final three designers create a look inspired by Robyn Rihanna Fenty's latest fragrance, Rogue. The two designers who make the pull are told that the challenge is not yet over -- each designer is tasked with presenting Rihanna with not only their perfume look, but also two of their favorite looks from past challenges and two new editorial looks. The designers go head-to-head in an epic fashion show culminating in Rihanna choosing one of the designers to join her design team and ultimately named the winner of Styled to Rock.