The Black Eyed Peas star, 38, was pictured leaving church with her husband Josh Duhmel in the US and they both looked happy ahead of their due date.
Fergie - real name Stacy Ferguson - dressed her blooming stomach in a dark blue baggy knit and a long navy scarf, which she draped over her shoulders.
The singer, who is expecting her first child with Josh, teamed her outfit with a pair of maternity skinny jeans and funky high-top trainers. She also carried a leather clutch and wore a silver cross around her neck.
In February, Fergie excitedly announced that she was pregnant, and she has opted for various maternity styles - including leather trousers - since then.
But as she gets ready to welcome her bundle of joy, we don't blame Fergie for dressing down!
Check out who else is expecting a baby in our gallery below!
Read more: Pregnant Frankie Sandford: baby bump at Summertime Ball!
Read more: Pregnant Kim Kardashian sends Kanye West romantic message for his birthday