NEW DELHI: After undergoing surgery for an aliment over a month ago, Congress president and UPA chairperson Sonia Gandhi on Sunday made her first public appearance when she attended a prayer meeting at Rajghat on the occasion of Mahatma Gandhi's 142nd birth anniversary.

Sonia, 64, was there for about 15-20 minutes at the memorial along with Prime Minister Manmohan Singh and senior BJP leader LK Advani.

Delhi chief minister Sheila Dikshit and union urban development minister Kamal Nath were also present at the memorial among others.

Leaders of various religions also offered prayers at the Gandhi Samadhi.

After the prayers, Advani was seen talking to Sonia apparently enquiring about her health.

Sonia had undergone a surgery for an aliment in August and returned to the capital last month.

Though she had attended a couple of meetings with top Congress leaders, she had not attended any public function so far.