economod

If anyone can help, I would really appreciate it. I just purchased a 2006 Audi A4 Quattro for my daughter. The car is in beautiful condition except the grille in front has a crack in it. I would really like to fix it, but I am unsure of the grille that fits. I want to put a RS4 mesh grille on it, is that possible. If so where can I purchase it. This is the first Audi I have ever had and I do not know much about this type of car. She loves the sporty look and wants an all black grille. Can someone explain to me what grilles can be used on her car? Does it need to be the same model and do they make a mesh grille for this Audi? If not what type of sporty grille can I use for this vehicle that is after market? Please help? Thank you!