Serbian lawmakers have met for the first time since elections in April, with far-right groups returning to Parliament after a several-year absence.

Friday's parliamentary session paves the way for the formation of the new government dominated by the pro-European Union Serbian Progressive Party of Prime Minister Aleksandar Vucic.

Vucic's party has 131 of 250 seats in the assembly, followed by the Socialists with 29. The extremist Serbian Radical Party led by firebrand nationalist Vojislav Seselj, who was recently acquitted of war crimes by a U.N. court, returned to Parliament as the third-strongest group with 22 seats.

Several lawmakers from the right-wing Dveri party wore Serbian national costumes to Friday's session. Dveri has pledged to challenge Serbia's EU bid and promote closer ties with Russia.