New letter in 'Dear X' series: Anne Talley. 

New letter in 'Dear X' series: Gretchen Saegh.

New letter in 'Dear X' series: Alicia Yoon.

New letter in 'Dear X' series: Lisa Ling.

New letter in 'Dear X' series: Stephanie Cheng.

New letter in 'Dear X' series: Chriselle Lim.

New letter in 'Dear X' series: Denee Pearson.

New letter in 'Dear X' series: Ashley Olson.

New letter in 'Dear X' series: Pili Restrepo.

New letter in 'Dear X' series: Julia Mavrodin.

New letter in 'Dear X' series: Sunina Young.

New letter in 'Dear X' series: Jana Williams.

Next letter in 'Dear X' series: Roseanne Fama.

First guest in 'Dear X' series: SuChin Pak.

First letter to younger self.