Continuity mistake: When Andy is talking to her boyfriend while doing the science project, she picks up the bottle of beer while getting up to go and hug him. The bottle disappears when the scene cuts to the hug.
Suggested correction: Given that how the shots change, it's likely that she would have put it on the desk again.
Other mistake: When Andy is talking to Christian outside the fashion event at night, he says, "If it weren't for the stupid boyfriend I would have to whisk you away right here and now," except Andy has never mentioned that she had a boyfriend. (01:04:58)
Suggested correction: It's quite likely that Christian knows this without Andy telling him. He and Andy know some of the same people who are associated with "Runway" (later on, he reveals the plan for Miranda to be fired). He probably has "connections" and keeps up with gossip.
