NAYPYITAW, Myanmar - Aung San Suu Kyi has taken the oath of office to become an official member of Myanmar's parliament.

The swearing-in ceremony in the capital Naypyitaw marks the first time the 66-year-old opposition leader has held public office since launching her struggle against authoritarian rule nearly a quarter century ago.

Suu Kyi's entry into the legislature Wednesday heralds a historic new political era for the Southeast Asian nation, cementing a risky detente between her party and the reformist government of President Thein Sein.

But her National League for Democracy party will occupy too few seats to have any real power in the ruling-party dominated assembly. There are fears the presence of the opposition lawmakers could simply legitimize the regime without any change.