'Loki' star Sophia Di Martino shows how her Slyvie costume is modified to breastfeed: 'It's not easy'

Sophia Di Martino’s "Loki" costume is mom-proof.

On Thursday, the new mom shared an Instagram photo of her unique costume for Slyvie, an alternate-reality female version of Tom Hiddleston's Loki on the Disney+ show.

Although she acknowledged "it’s not easy being a working Mama," Martino said costume designer Christine Wada's modifications that enabled the 37-year-old actress to breast feed between scenes "made it possible for me to do my job AND be a parent."

"Wada designed Sylvie’s costume and had the genius idea of adding concealed zippers for easy access so that I could use my @elvie pumps easily and nurse my baby between takes," wrote Martino, who welcomed a baby in late 2019.

In the photo, Martino demonstrated how two breast panels can be removed from her costume to reveal her bra. The actress said she's "forever grateful" for the alteration.

Tom Hiddleston's Loki confirmed as Marvel's first bisexual lead character

Martino recently shared she was "heavily pregnant" when she first auditioned for the role of Slyvie.

"It was the shortest casting experience I think I’ve ever had," Martino told Variety on June 25. During an Instagram Story Q&A, she added: "I did an audition tape. I couldn’t do a screen test because Tom (Hiddleston) was in New York and I was in London. I was really pregnant so I couldn't travel."

Martino told the publication she landed the coveted role in the Marvel Cinematic Universe "on the back of this (audition) tape, which never happens, and especially with a job like this!"

Watch: Tom Hiddleston's mischief returns on Disney+ in trippy trailer for Marvel's 'Loki'

The English actress started training for "Loki" in February 2020, just "4 months postpartum," she wrote in a picture from her first day at the Marvel Studios stunt gym.

"The very beginning of my @officialloki journey," she captioned the throwback in early June. "Hopeful, naïve and VERY unfit! The incredible @sarah__irwin and the rest of the amazing stunt team had quite a job on their hands getting me into shape!"

The 20 best TV shows on Disney+ to watch right now, from 'Loki' to 'High School Musical'

This article originally appeared on USA TODAY: 'Loki' star shows how Slyvie costume is modified to breastfeed