Complex sentence: The final ensemble of the luxurious wedding dress which the 18-year-old Princess Alexandra adorned for the wedding was made with rich flowing silvery silk (woven at Spitalfields) and lace, embellished by fresh-flower garlands made of orange-blossom and myrtle.
Split into simpler sentences: The final ensemble of the luxurious wedding dress which adorned the 18-year-old Princess Alexandra for the wedding was made with rich flowing silvery silk (woven at Spitalfields) and lace. The gown was embellished by fresh-flower garlands made of orange-blossom and myrtle.