Lasith Malinga has been appointed as Sri Lanka's Twenty20 captain, following a decision to relieve Dinesh Chandimal of his leadership duties.
Chandimal's demotion comes after he opted to drop himself, due to poor form, during Sri Lanka's World Twenty20 title success this month.
Malinga was drafted in to lead Sri Lanka in Chandimal's absence during the knockout stages in Bangladesh and, after securing the island nation's first World T20 title, has now been handed the job full time until March 2015.
Chandimal has struggled for form since he was identified as one of the young players to take over a leadership role, with veterans Kumar Sangakkara and Mahela Jayawardene winding down their celebrated careers.
In February last year the 24-year-old was named vice-captain of the Test and one-day international teams - behind Angelo Mathews - as well as being entrusted as skipper of the Twenty20 side.
But poor form in the limited-overs formats prompted the Sri Lanka national selectors to announce Chandimal's demotion following a selection committee meeting to review the leadership of the national team.
Lahiru Thirimanne will replace Chandimal as vice-captain in all formats ahead of the upcoming tour to Ireland and England. Mathews retains his place as skipper of the Test and ODI teams - meaning he is set to lead Sri Lanka into next year's World Cup.
"Lasith Malinga has been appointed as the captain of the national T20 team while Lahiru Thirimanne has been appointed as the vice-captain of same until March 2015," a statement on the Sri Lanka Cricket website read.
"Angelo Mathews has been appointed as the captain of the national ODI team while Lahiru Thirimanne has been appointed as the vice-captain of same until March 2015.
"Angelo Mathews and Lahiru Thirimanne have also been appointed as the captain and vice-captain of the national Test team until March 2015.
"This has been approved by the Hon. Minister of Sports."
Sri Lanka will meet Ireland in a two-match ODI series in Dublin, starting on May 6, to kick off their upcoming tour.
Malinga's first T20 international in full-time charge will be against England in a one-off match at the Kia Oval on May 20.