Here is information on Nao, all of which can be found on her official site in Japanese. I've taken the time to translate/transliterate everything on here myself, so respect this by not copying it directly and claiming it as your own. Thanks.

Nao's Profile
First Name: Nao
Last Name: Takagi
Birthdate: 1976 Jul 10
Blood Type: AB
Hometown: Nagoya (Aichi Prefecture)
Pet Dog: Aqua (Yorkshire Terrier)
Favourite Things: Soft Ice Cream, Blue (the colour), Dogs, Dolphins, the Sea
Enemy: Watermelon
Hobbies: Surfing, Collecting Perfume
Mottos: Love & Peace, "-ing" Life

Nao's Work History     1997

Various Show Modeling, Concert Program

"Kakushi Art Rally" Fuji TV Program Series

"Annie" Musical

Akiko Yanagi's Jazz Dance City "Steppin' 97" Performance

    1998

"Jazz Dance Festival '98" Fine Arts Association of Japan Jazz Dance Performance

"How To Date 2" Musical

Akiko Yanagi's Jazz Dance City "Keep It Up 98" Performance

"Shin Densetsu Kourin" Sailor Moon Musical (Role: Sailor Uranus)

    1999

"Dream Concert Part 2" Kenichi Mikawa & Naoko Ken Joint Concert

The 33rd "Tokyo Motor Show" (Mazda Booth Show Dancer)

"Kaguya Shima Densetsu" Sailor Moon Musical (Role: Sailor Uranus)

"Kaguya Shima Densetsu Kaiteiban" Sailor Moon Musical (Role: Sailor Uranus)

    2000

"Last Dracul Jokyoku" Sailor Moon Musical (Role: Sailor Uranus)

"Transylvania no Mori" Sailor Moon Musical (Role: Sailor Uranus)

"Jazz Dance Festival 2000" Fine Arts Association of Japan Jazz Dance Performance

    2001

"Ninja Yell" Musical (Role: Ninja Orange)

Akiko Yanagi's Jazz Dance City "Steppin' 2001" Performance

"Jazz Dance Festival 2001" Fine Arts Association of Japan Jazz Dance Performance

"Transylvania no Mori Kaiteiban" Sailor Moon Musical (Role: Sailor Uranus)

"Death Vulcan no Fuuin" Sailor Moon Musical (Role: Sailor Uranus)

"Ankoku no Princess Black Lady" Sailor Moon Musical (Role: Sailor Uranus)

    2002

"Ankoku no Princess Black Lady Kaiteiban" Sailor Moon Musical (Role: Sailor Uranus)

"Ai no Sanctuary" Sailor Moon Musical (Role: Sailor Uranus)

"Mugen Gakuen Mistress Labyrinth" Sailor Moon Musical (Role: Sailor Uranus)

"Live! T's Jam Halloween Special" Live Concert (as a member of Love No Limit)

"Live! T's Jam Good God Special" Live Concert (as a member of Love No Limit)

    2003

"Borderless 2 ~Guardian Angels~" Musical (Role: Zaza)

"Live! T's Jam Spring Big Preview Event" Live Concert (as a member of Love No Limit)

"Borderless Christmas Dinnershow ~The Rose~" Dinner Show

    2004

"Borderless 3 ~The New Moon's Night Dream/Sun Rise Sun Set~" Musical (Role: Kimera)

"Live! T's Jam Spring Big Preview Event" Live Concert (as a member of Love No Limit)

"Borderless Christmas Dinnershow ~Angel Don't Cry~" Dinner Show

For more information on Nao Takagi, as well as her current/recent projects and roles, visit her official site (Japanese only).