HI, PLEASE COULD SOMEBODY TELL ME THE BEST WAY TO ATTACH RIBBON AROUND THE BOTTOM OF BOTH TIERS OF A TWO TIER FONDANT COVERED CAKE. THANK YOU.

You only really need to attach the ribbon at the back of the cake. A dot of royal icing to attach one end of the ribbon, hold in place gently with 1 finger while you pull the ribbon around the tier gently (but making sure it is taut), then another dot of RI to attach this end to the already fixed end. Or you could use double sided tape (only touching the two ends of the ribbon together, not attached to the cake) if this is easier for you. Don't use a pin, even if it is glass/plastic headed and visible!

THANK YOU FOR YOUR HELP , I WILL USE ROYAL ICING AS YOU SUGGESTED.