Fans are shocked at how youthful Jessica Simpson’s 61-year-old mother looks

Jessica Simpson made fans do a double-take at a selfie she posted with her incredibly youthful-looking mother, who is 61.

Jessica Simpson has astonished fans with a recent selfie she took with her mother Tina.

Sharing the photo on social media, Simpson, 40, wrote, “My mom, @tinasimpsonofficial visits @todayshow for a sit down with Sheinelle Jones for her series, Through Mom’s Eyes tomorrow morning. She will be giving you a little glimpse into our past … the early years coming up in my career, body image, how Ashlee and I were growing up, and our current passions including running the @jessicasimpsonstyle brand together. So exciting!”

The photo attracted numerous comments from her fans about how youthful Tina looked, comparing her to Jessica’s sister.

Jessica Simpson’s mum Tina is actually 61. Picture: Instagram

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“Wow she looks like Ashley here!” one fan wrote.

“Mom or sister … seriously tho,” said another.

“You gals could be sisters!” wrote a third fan.

One said she “looks younger than you”, while another said she looked “like she’s 21”.

Tina Simpson is in fact 61 years old.

However, Jessica Simpson’s mother isn’t the only one who has been getting attention.

Recently, Jessica has been showing off her incredible 45kg weight loss on Instagram.

During a time of year when many are indulging in holiday sweets, she showed off her impressive slim-down with a picture on Christmas Day.

Simpson flaunted her fit frame in a holiday-inspired red-and-white onesie shared to her Instagram.

Simpson laughs in the photo, which showed her red sweatpants had fallen to her knees. The long-sleeved onesie hugged her smaller frame.

She was also wearing a matching wool hat.

“So I thought Eric (Johnson, her husband) was taking a photo from the waist up,” Simpson captioned the picture.

Stars reacted to Simpson’s jaw-dropping weight loss in the comments section.

“You so fit!” actress Jessica Alba wrote.

Ruby Rose reacted with several drooling emojis.

“LayerZ,” January Jones responded.

“We all wanna know how did you get so skinny?” one fan reacted.

Another agreed, “I need to do what she’s doing. Help!”

“How do you stay so thin? You look great,” one of her followers also chimed in.

Jessica Simpson has been looking great. Picture: Instagram

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The singer-turned-fashion-designer flaunted her weight loss throughout the year.

Her personal trainer Harley Pasternak told E! News earlier this year that he credited her toned legs to getting in 14,000 steps a day and full-body workouts.

“We slowly ramped those up – we started really easy and slowly increased them,” Pasternak said of the fitness regimen.

“We started with doing a full-body workout, one set of each exercise, not really doing too much intensity per body part and gradually increasing the volume and intensity. Focusing on a few muscle groups per day. Different muscles each day of the week.”