Adele's first world tour in four years has started well, with positive reviews from the critics.

The Guardian's given the singer four out of five stars, praising her "fantastic voice" and calling the performance "solid - if unsurprising".

The gig in Belfast got five stars from The Sun, which said the show proved why Adele is "the most successful artist of the 21st century".

She plays the 3Arena in Dublin this Friday and Saturday night.