On Episode 4 of UFC 231 Embedded, strawweight Nina Ansaroff readies for battle alongside Amanda Nunes, her fiancee and UFC’s bantamweight champion; opponent Claudia Gadelha expects a match of true mixed martial arts.

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Featherweight champion Max Holloway celebrates his birthday with his team, family and a makeshift low-cal cake. Former strawweight champion Joanna Jedrzejczyk takes recommendations for breakfast orders, featherweight title contender Brian Ortega does interviews, and Holloway poses for the camera.

Jedrzejczyk gets her makeup done side-by-side with fellow flyweight title challenger Valentina Shevchenko. Then the stars of both title bouts appear at the UFC 231 press conference to sound off and face off.

UFC 231 Embedded is an all-access, behind-the-scenes video blog leading up to the two world title fights taking place Saturday.

UFC 231: Holloway vs. Ortega Fight Card

MAIN CARD (PPV/10 p.m. ET)

UFC Featherweight Championship
Max Holloway (c) vs. Brian Ortega

Vacant UFC Female Flyweight Championship
Valentina Shevchenko vs. Joanna Jedrzejczyk

Welterweight: Gunnar Nelson vs. Alex Oliveira

Featherweight: Hakeem Dawodu vs. Kyle Bochniak

Light Heavyweight: Jimi Manuwa vs. Thiago Santos

PRELIMINARY CARD (FOX Sports 1/8 p.m. ET)

Strawweight: Claudia Gadelha vs. Nina Ansaroff

Lightweight: Olivier Aubin-Mercier vs. Gilbert Burns

Female Flyweight: Katlyn Chookagian vs. Jessica Eye

Middleweight: Elias Theodorou vs. Eryk Anders

PRELIMINARY CARD (UFC Fight Pass/6 p.m. ET)

Bantamweight: Brad Katona vs. Matthew Lopez

Welterweight: Chad Laprise vs. Dhiego Lima

Lightweight: Kyle Nelson vs. Carlos Diego Ferreira

Light Heavyweight: Devin Clark vs. Aleksandar Rakic