The Haynes Sisters.
3 seconds sound clip from the White Christmas (1954) movie soundboard.
You can hear this line at 00:33:59 in the Blu-ray version of the movie.
Quote context
[...]
- You don't get those girls till after they've done their number.
- Well, how long is it going to take?
- Well, it'll only be... Wait a minute, there's their music.
- How's your coffee holding up?
- Ladies and gentlemen, an impromptu surprise for you.
- Sisters, sisters, there were never such devoted sisters. (2)
- Never had to have a chaperone.
- No, sir.
- I'm here to keep my eye on her. (2)
- Caring, sharing every little thing that we are wearing. (2)
- When a certain gentleman arrived from Rome, she wore the dress and I stayed home. (2)
[...]