The designer versions are available for hundreds of pounds; but a DIY version can come in just a few. There are tons of tutorials on how to make the tassel belts from how to make a tassel to getting that Gucci belt on belt look.
To know how to make the tassel visit Runwaydiy for a quick and easy tassel tutorial.
One of the best DIY to make a leather and rope tassel belt is available at Honestly... WTF.
Want to update your old gold belt? An simple DIY to get the GUCCI belt look, check out A Matter Of Style.
Don't have a belt to spare? Recreate the Gucci belt with a piece of leather with PS - I Made this.
For a little more fancy belt, you can opt to make this fun and easy beaded tassel belt from Required 2 Be Inspired.
Finally for that Sonia Rykiel inspired fancy rope tassel belt head to I Spy DIY.