Thanks everyone!
Yes, apparently I did manage to ask the right girl! ;-)
It was late Sunday evening, 20th of April. The event took place in the middle of the square in front of the Notre-Dame church in Paris. The square was romantically lit with flickering torches, while a street musician offered a great rendition of the song Stand By Me (original by Ben E. King). Although rather short, I still didn't have enough time to deliver the lines I intended to. She tear'ed up and cried "yes" before my knee touched the ground. ;-)
It was at that point when, off to right side of the square, the musician's audience took note, which resulted in the expected clapping followed by dancing. ;-)
T'was a great night to remember!