Jessica Simpson's husband, Eric Johnson, got fans talking with a gushing Instagram post involving his wife - but it caused confusion too.
The former NFL player shared several family photos and a message for the mother of his three children to wish her a happy birthday.
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While the never-before-seen images delighted his social media followers, they couldn't get past his blunder as he got her age wrong.
WATCH: Eric Johnson shares awkwardly heartfelt message for wife Jessica Simpson
His caption read: "Happy 39th Birthday Jess. I had too much fun with you yesterday to Instagram;). I love exploring the universe with you. You teach our kids love and strength and fun everyday and you show them ur heart no matter what.
"And you’re an incredible wife/partner/ friend. But I’m never getting on the back of a sea doo with you again. You’re a monster on the ocean. Happy Birthday babe! Cheers to a creative year ahead! I love you!!"
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Fans pointed out that Jessica celebrated her 40th last year and that this year would have been her 41st birthday.
Eric shared several photos to celebrated Jessica's birthday
"Isn't she 41?" asked one, while another added: "Wasn't she born in 1980?" and a third asked: "39? I thought she was 41?"
Some of Eric's followers were convinced he had done it on purpose and that perhaps they had decided to age in reverse after hitting the big 4-0.
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Eric posted numerous photos including one of Jessica steering a sea doo through the choppy waters.
Jessica and Eric share three children
The couple share three children, Maxwell, nine, Ace, eight, and Birdie, two, together and they recently marked their son's birthday with a garden party.
Ace was treated to a baseball and reptile-themed 'do, complete with a red, white and blue balloon display to tie in with 4 July.
Jessica shared a sweet photo of herself with her husband and their children at the party, which saw them pose alongside a tasty looking birthday cake.
In the caption, Jessica wrote: "What a whirlwind week celebrating our sweet, handsome, incredibly talented Ace turning 8! Baseball and reptiles was all he wanted, classic boy!"
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