Celebrity Jenna Dewan Tatum Jokes About Trying On Channing Tatum's Splash Costume in a Hilarious Throwback By Meghan Overdeep Meghan Overdeep Twitter Meghan Overdeep is a writer and editor based in Brooklyn who covers all things celebrity and pop culture. She worked as a News Blogger for InStyle for two years and is currently a Senior Staff Writer at Southern Living. InStyle's editorial guidelines Updated on August 5, 2016 @ 09:30AM Pin Share Tweet Email Photo: channingtatum/Instagram It looks like Channing Tatum isn't the only mermaid in the family. A few days after news broke that her husband would be taking on the role originally played by Darryl Hannah in the Disney reboot of Splash, Jenna Dewan Tatum took to Instagram with a bit of evidence that she and their daughter Everly were the original mermaids in the Tatum household. "That time I was trying on @channingtatum's costume for Splash and everyone thought I was announcing a pregnancy #tbt" Dewan Tatum wrote alongside a throwback snap of herself modeling a mermaid tail with her and now-3-year-old Everly (also in purple mermaid garb) in the background. The photo was originally posted by Tatum nearly eight months ago—long before there was any public talk of him getting his merman on in a Splash remake. Given the recent developments, Dewan Tatum found the perfect way to utilize the funny old photo to poke a little fun at the situation. Channing Tatum Is Playing a Mermaid in Disney's Remake of Splash Can you blame her?