‘Sister Wives’ Star Christine Brown Talks Being Related to Meryl Streep (Exclusive)

Christine Brown is the dancing queen.

The Sister Wives star, 53, reveals in her new memoir, Sister Wife: A Memoir of Faith, Family, and Finding Freedom, out now, that she’s related to beloved actress Meryl Streep.

Brown mentions it when revisiting the birth of her daughter Gwendlyn, recalling how the 76-year-old Oscar winner helped her through the pain in an extremely roundabout way.

The reality star said in her book that Gwendlyn’s birth was her “absolute favorite.”

Brown noted that the pain “never got that bad,” and that she told the doctors at the time, “‘Turn on ABBA,’ I said. ‘I got this.'”

“They turned on ‘Mamma Mia,’ and I started lip syncing,” she remembered. “I went into transition during the song, crouched down on the floor on all fours, worked through the transition, got up, finished the song, and had her in fifteen minutes. It was amazing.”

After divulging how the Swedish pop group’s hit 1975 song helped her welcome Gwendlyn to the world, Brown connected the dots to a recent genetic test that connected her to Streep.

“Also, I recently found out, through DNA testing, that I’m related to Meryl Streep,” she wrote.

Brown further expanded upon her connection to Streep when speaking to PEOPLE exclusively about her book.

“This is the thing … I’m probably just as related to you than I am to Meryl Streep,” she says.

During the DNA testing, Brown reveals that she also discovered that her genetic code showed that she is also related to actor siblings Jake Gyllenhaal and Maggie Gyllenhaal as well as “the original Viking.”

“But my kids are always like, ‘Well, we always knew you were related to Meryl Streep because of Mamma Mia,” she continues. “It’s through Mamma Mia is what the real connection is because I feel like it’s a similar story. I don’t know, it’s so silly.”

“When I was reading the book because I did the audiobook for it — which was so much fun, by the way — that’s when some things came out and I realized how that sounded, and I’m like, ‘Oh, well, there we go,'” she adds.

The throughline from Brown and Streep is largely thanks to the Mamma Mia! films.

Streep starred in the 2008 jukebox musical film featuring the music of ABBA alongside Christine Baranski, Amanda Seyfried, Pierce Brosnan, Dominic Cooper, Colin Firth, Stellan Skarsgård and Julie Walters.

The film is an adaptation of the 1999 Broadway musical of the same name, which follows a bride-to-be named Sophie who invites three men to her wedding on a Greek island not knowich when of them is her father. Steep plays Sophie’s mother, Donna, in the film.

Streep — a three-time Oscar winner thanks to roles in Kramer vs. Kramer, Sophie’s Choice and The Iron Lady — reprised the role in the 2018 film sequel Mamma Mia! Here We Go Again.

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Sister Wife: A Memoir of Faith, Family, and Finding Freedom is now available, wherever books are sold. Additionally, Sister Wives season 20 premieres Sunday, Sept. 28, at 10 p.m. ET/PT on TLC.