SINGAPORE - Worker's Party MP Lee Li Lian, 35, gave birth to a girl on Tuesday morning.
The new mother shared pictures of her first child, Karys Koh, on her Facebook page hours after the delivery.
Karys was born at Mount Alvernia Hospital, weighing in at 3.02kg. Like Ms Lee, she was born in the year of the Horse.
On Facebook, Ms Lee, the MP for Punggol East, wrote in Mandarin: "After going through an unstable pregnancy, enduring frequent pregnancy rash, and after nine months of waiting, we finally welcomed our daughter's arrival today!"
She had been working right up to the day before the delivery, going for her Meet-the-People session as recently as Monday night.
Ms Lee said that she and her husband, telecommunications officer Jacky Koh, are still "cracking our heads" deciding on Karys' Chinese name.
She also took to Facebook to thank the residents who had offered her their best wishes and advice during the period.
"Going forward, like many mothers, I will have many challenges to face as well and, like them, I will persevere to get through these obstacles!" she said.
She also encouraged people to donate to the Singapore Cord Blood Bank, after donating her daughter's cord blood. This would help anyone requiring stem cell therapy, she said.
Ms Lee won the Punggol East by-election last January with 54.5 per cent of the vote, and shared news of her pregnancy in January this year.
As a full-time MP she has spoken on challenges working mothers face and the need for policies to help them strike a better balance between work and family life.
Ms Lee is the second MP in recent years to have given birth, following Ms Sim Ann, Minister of State for Education as well as Communications and Information, who had her third child in 2011.