Whitmire was scheduled to face Polyana Viana on March 7, 2020 at UFC 248. At the weigh-ins, Whitmire weighed in at 117.5 pounds, 1.5 pounds over the strawweight non-title fight limit of 116. She was fined 20% of her purse and her bout with Polyana Viana was expected to proceed as scheduled at a catchweight. Subsequently, Whitmire was hospitalized the day of the event and the fight was cancelled. The pair was rescheduled on August 29, 2020 at UFC Fight Night 175 in a flyweight bout. Whitmire lost the fight via an armbar submission in round one.
