I went to the LV on Bond St. to get my agenda heat stamped, I can't wait to get it back! I just went in and asked for it and she was like 'is your agenda Louis Vuitton' and I was like 'um, yes!' so anyway I just looked through their font size/color book and my groom agenda is red and the lettering is gold so I ended up getting just a giant M (in the largest font possible!) above the Louis Vuitton Paris in gold as well. Normally I'm all about subtlety but I thought it was quite cute/cheeky to have a big M.