Jackie Burns and Kate Fahrner happened.

I sink Mariand and KRC happened on tour sometime ago...

If not long ago it definitely happened when I saw them in LA at the matinee on January 14, 2012.

BROADWAY
Jackie Burns & Kate Fahrner

FIRST NATIONAL TOUR
Jackie Burns & Emily Ferranti
Dee Roscioli & Emily Ferranti
Mamie Parris & Alli McGinnis
Mamie Parris & Megan Campanile
Mariand Torres & Katie Rose Clarke
Carla Stickler & Katie Rose Clarke

LONDON
Rachel Tucker & Gina Beck
Nikki Davis-Jones & Chloe Taylor
Gemma Atkins & Gina Beck
Nikki Davis-Jones & Gina Beck
Rachel Tucker & Zoë Rainey
Gemma Atkins & Chloe Taylor
Nikki Davis-Jones & Chloe Taylor

SECOND NATIONAL TOUR

Anne Brummel & Natalie Daradich
Christine Dwyer & Natalie Daradich
Christine Dwyer & Lesley McKinnell
Anne Brummel & Tiffany Haas
Anne Brummel & Lesley McKinnell
Anne Brummel & Lisa Livesay
Laurel Harris & Natalie Daradich
Laurel Harris & Tiffany Haas
Christine Dwyer & Lisa Livesay
Anne Brummel & Tiffany Haas
Stephanie Torns & Tiffany Haas

SCHEVENINGEN
Willemijn Verkaik & Chantal Janzen
Renée van Wegberg & Chantal Janzen
Willemijn Verkaik & Céline Purcell
Bettina Holwerda & Chantal Janzen

ASIA NATIONAL TOUR
Jemma Rix & Allyce Martins
Jemma Rix & Lucy Durack
Jemma Rix & Suzie Mathers
Zoe Jarrett& Suzie Mathers

There may be more that I am not remembering.

Australian Tour
Laura Bunting and Allyce Martins (happened a while ago)

Scheveningen

Renée van Wegberg and Céline Purcell

Carla Stickler and Alli Mauzey
Mamie Parris and Alli Mauzey

1st Tour

Recent pairs...

BROADWAY
Jackie Burns & Kate Fahrner
Caroline Bowman & Chandra Lee Schwartz

FIRST NATIONAL TOUR
Mamie Parris & Alli McGinnis
Mamie Parris & Megan Campanile
Carla Stickler & Katie Rose Clarke
Mamie Parris & Lesley McKinnell
Mamie Parris & Natalie Daradich
Mamie Parris & Alli Mauzey
Carla Stickler & Alli Mauzey

SECOND NATIONAL TOUR
Stephanie Torns & Tiffany Haas
Anne Brummel & Marissa Miller
Stephanie Torns & Marissa Miller

WEST END
Gemma Atkins & Gina Beck
Michelle Pentecost & Gina Beck

SCHEVENINGEN
Willemijn Verkaik & Chantal Janzen
Renée van Wegberg & Chantal Janzen
Willemijn Verkaik & Céline Purcell
Renée van Wegberg & Céline Purcell
Bettina Holwerda & Chantal Janzen
Willemijn Verkaik & Manon Novak
Renée van Wegberg & Ianthe Tavernier

ASIA NATIONAL TOUR
Jemma Rix & Lucy Durack
Jemma Rix & Suzie Mathers
Zoe Jarrett & Suzie Mathers
Gretel Scarlett & Suzie Mathers
Jemma Rix & Allyce Martins
Jemma Rix & Claire George

Happening today...

BROADWAY
Jackie Burns & Lindsay K. Northen

FIRST NATIONAL TOUR
Mamie Parris & Sarah Schenkkan

Happening soon...

SECOND NATIONAL TOUR
Christine Dwyer & Tiffany Haas

Ashley Dawn Mortensen & Alli Mauzey happened on the First National Tour today...

SECOND NATIONAL TOUR
Christine Dwyer & Tiffany Haas

Thanks for all the updates, especially on understudies/standbys. I'll get the list current soon!

Now that Nicole Parker and Alli Mauzey are performing in the first National Tour together I think we should add them. I also don't see Mamie Parris and Alli Mauzey. We should probably add them as well.