Christina Aguilera rocked a grey maxi dress as she went shopping for baby furniture with her fiancé Matthew Rutler on Wednesday.

The 33-year-old singer, who's pregnant with her second child with fiancé Matthew Rutler, stepped out in Beverly Hills for a shopping trip yesterday proudly showing off her growing belly.

The blond beauty was joined by Rutler for a trip to the AFK children's furniture store on Wednesday. Xtina sported a gray maxi dress over her baby bump paired with a black sweater, sunglasses and a straw fedora hat. She completed her maternity look with hoop earrings and her hair in a ponytail.

During the shopping trip, Aguilera browsed kids' goodies, including toys, furniture and accessories. She was even snapped taking photos of items she liked with her phone.

Aguilera, who's expecting a baby girl, has been showing off her bump a lot lately. This past weekend, she rocked a black lace dress while performing at Wango Tango outside of L.A. And one week before that, she was glowing while entertaining the crowd at the New Orleans Jazz Fest!

The songstress is already a mommy to 6-year-old Max, her son with ex-husband Jordan Bratman.

The singer, who is currently a judge on hit singing competition The Voice, teamed her grey dress, which featured slashes to the knee, with a cropped black cardigan, which was fastened tightly over her growing bump. She added grey-rimmed sunglasses tucked into the neckline of her dress, while she sported large hoop earrings in her signature style.

Her long blonde hair was fastened into a side-ponytail, while she kept cool in a straw trilby hat. Adding some glamour, she emphasized her eyes with a flick of black eyeliner, wore false eyelashes and a dash of pale pink lipstick.

The star is reported to be taking a hiatus in the seventh season of the US Voice, due to her pregnancy. She is set to be replaced by former No Doubt singer Gwen Stefani, who has signed up for one season as Christina has already signed up to return to The Voice during season 8.