I found some interesting trivia. The Barbra Streisand rose wasn't named for Barbra to honor her. She actually commissioned it, paying for it to be bred and named after her. Here's what she had to say about it:
"It had to be very healthy, a disease-resistant rose. It had to have fabulous fragrance and the color had to be - I'm very particular: There's not an orange thing in my house or in my garden. If this rose is in bloom, it's lavender. And as it blossoms, it actually goes through many colors, like a chameleon, which represents me in a sense, because I have a lot of facets to my personality."
