Europe is bracing itself for another royal wedding - Sweden's Princess Madeleine has announced her engagement to New York-based financier Christopher O'Neill.

The youngest child of King Carl XVI Gustaf and Queen Silvia is fourth in line to the Swedish throne.

She was previously engaged to lawyer Jonas Bergstrom, but called off their wedding in 2010 amid allegations of his infidelity.

Princess Madeleine and her new fiance announced the happy news on Thursday.