What is a good duet to sing to with my friend for a talent show?

Is this a 2-girl or boy-girl duet? And what age range?

ADDED
Here are some different approaches and some different songs

- for pop songs, look for some where the individuals take different parts, not just sing everything together. Examples:
Cheetah Girls - Together We Can, Cinderella
Aly and AJ - Potential Break-Up Song, Careful With Words

- or songs where you can interact with each other
Lillix - What I Like About You
Wicked - Loathing

- or other songs you may like that weren't necessarily written for 2 parts where you can alternate verses and background singing

Good luck!!!

Tim McGraw and Faith Hill

The Prayer

Whiskey Lullaby by Brad Paisley and Alison Krauss

for boy-girl: "I'll cover you" from RENT or the Ray Charles and Natalie Cole version of "Fever"

ill have to get back to you on any others my brain just died.

All I Ask For You by Lloyd-Webber for example

wow i have a few and they are: stand up by beyonce,and im telling you im not going,hate that i love you by rihanna,i surrender by celin dion,listen by beyonce and love by keisha kole thats all the songs i sing cause i love singing!!

Carol of the Bells. You know it has so many parts. Heres the song: Hark! how the bells, sweet silver bells
All seem to say, throw cares away.
Christmas is here, bringing good cheer
To young and old, meek and the bold
Ding, dong, ding, dong, that is their song,
With joyful ring, all caroling
One seems to hear words of good cheer
From everywhere, filling the air
O, how they pound, raising the sound
Oer hill and dale, telling their tale

Gaily they ring, while people sing
Songs of good cheer, christmas is here!
Merry, merry, merry, merry christmas!
Merry, merry, merry, merry christmas!

On, on they send, on without end
Their joyful tone to every home
Hark! how the bells, sweet silver bells
All seem to say, throw cares away.
Christmas is here, bringing good cheer
To young and old, meek and the bold
Ding, dong, ding, dong, that is their song
With joyful ring, all caroling.
One seems to hear words of good cheer
From everywhere, filling the air
O, how they pound, raising the sound
Oer hill and dale, telling their tale

Gaily they ring, while people sing
Songs of good cheer, christmas is here!
Merry, merry, merry, merry christmas!
Merry, merry, merry, merry christmas!

On, on they send, on without end
Their joyful tone to every home.
Ding dong ding dong

If it is two girls, "For Good" from Wicked is a lovely one.