Politely decline. You're expecting a call from Becca for more "modeling" and would like the extra time to get yourself ready!

“Sorry I have plans with someone tonight, next time though I’ll absolutely take you up on that, ” you say, wanting the extra time to get ready and shower.

Emma shrugs and pulls out a handle of vodka before heading out to pregame and party. Not long after she heads out, Becca texts "Done in an hour. Meet me outside the student center!"