Class Act Rose

Class Act is a modern semi-single creamy white rose whose shrub has quite an angular growth habit. Well, the rose with the label Class Act growing in my garden is.

 I think this is the correct name.
Class Act Rose

My big rose book seems to be describing a slightly different rose which is semi-double and whose flowers have 25 flatly arranged petals. Hmm... Are we both right? I haven't counted, but some of the flowers look to have less than that number!

 On a big, sturdy shrub.
Class Act Roses

I like the small red hips that my Class Act rose has in the winter. And the flowers are a nice medium size. I like roses with semi-single (or semi-double?) flowers.