'Nervous' Adele starts first world tour in 4 years from Belfast

Adele has kicked off her first world tour in four years with a concert in Belfast that received overwhelmingly positive reviews despite the best-selling singer's bout of pre-gig nerves.

The show in Northern Ireland's main city on Monday was sold out months in advance and fans came from as far as Japan and South Africa to catch a first glimpse of the British ballad singer.

The 100-stop tour includes dates in London in March, Paris in June, as well as New York's Madison Square Garden and the Staples Center in Los Angeles, culminating with two dates in Mexico City in November.