According to Wikipedia, this was the first of several commercial recordings to appear on Billboard's best-seller list. The first 2 verses and choruses were sung by a female vocalist; the rest by a male, both unknown to me. My transcription from Spotify:


BELL BOTTOM TROUSERS
Words and music by Moe Jaffe, ©1944.
As recorded by Tony Pastor and His Orchestra (charted 1945)

1. Once there was a little girl who lived next to me,
And she loved a sailor boy; he was only three.
Now he's on a battleship in his sailor suit,
Just a great big sailor man, but he's just as cute.

CHORUS: Bell bottom trousers, coat of navy blue,
She loves her sailor, and he loves her, too.

2. When they walk along the street anyone can see,
They are, oh, so much in love, happy as can be.
Hand in hand they stroll along; they don't give a hoot.
He won't let go of her hand even to salute. CHORUS

3. Ev'rywhere her sailor went, she was sure to go,
Till one day he sailed away; where, she doesn't know.
Now she's gonna join the WAVES, maybe go to sea,
Try to find her sailor boy wherever he may be. CHORUS

4. If her sailor she can't find on the bounding main,
She is hopeful he will soon come home safe again
So they can get married and raise a family,
Dress up all their kiddies in sailors' dungarees. CHORUS