"Something Old, Something New" is the twentieth episode of the fourth season of Private Practice and the 74th produced episode of the series. It is also the 220th produced episode of the Grey's Anatomy franchise. It was broadcast on May 5, 2011.
The day of Cooper and Charlotte's wedding dawns but they both begin to second guess their wedding plans, especially when their parents arrive in L.A and force the extreme differences between them to become apparent. Addison and Sam try to navigate a working relationship in the wake of their break up while Naomi's presence makes matters even more complex. Meanwhile, Violet's breach of confidentiality case has the doctors having to decide between the practice or protecting their friend after Addison and Pete becomes witnesses in the case.
- "Heart & Arrow" - Matt Duncan
- "Violin" - Amos Lee
- "The Winter From Her Leaving" - William Fitzsimmons
- "Love Is You" - Chrisette Michele