Derek: I didn't think you wanted to wear a wedding dress.
Meredith: I don't! How does he even know we're engaged?
Derek: Richard's my friend. He's not the one that ordered the dress. If you don't wanna wear a wedding dress, talk to Izzie.
Meredith: Oh, yeah! As the chemo drips into her cancer-y arm, and she looks at me with those cancer-y eyes, those cancer-y wedding loving eyes--
Derek: Be strong.
Meredith: We will have brides maids in pink taffeta! And you will be wearing a top hat and a morning coat! And somebody will be singing wind beneath my fricking wings!
Derek: You want me to talk to her? (goes and talks to Izzie)
Izzie (crying): Okay, I'm glad we talked. (Derek walks out)
Derek: Apparently a morning coat is non-negotiable. Also, we have to make time for ballroom dancing lessons. (Meredith looks at him, a little scared)