After Paris slow dances with Patrick, she turns to the couch where Nicole is sitting, but the shot immediately afterwards shows Paris sitting on the couch as well.
While the boys are cooking dinner, Nicole asks one of them to place a pillow underneath her feet, but the pillow is put under Paris' feet instead.
It is obvious that when Kevin looks through the microscope, his face is not pressing against it. However, he still manages to become covered in the mascara which Nicole has put on the microscope.
The supervisor at Zentech is adamant that Paris and Nicole must button their work smocks, but in the next scene, their smocks are tied round their waists and she makes no complaints.