Jake Browning might have taken a backseat to Joe Flacco, but the quarterback's fiancée is still clearly in the spotlight ... wowing Bengals fans with a sexy gameday outfit on Thursday.
Stephanie Niles -- who's been dating Browning for years -- took to her Instagram page just prior to Cincinnati's kickoff against Pittsburgh ... and proclaimed her loyalty to her man and his team despite his recent benching.
She did it all while showing off a revealing 'fit that she planned to wear to Paycor Stadium to support Browning and Who Dey nation.