Gabrielle Union stuns fans in cutout dress: 'There's no way you're 49'

Gabrielle Union's "alien" dress has fans praising her ageless look.

On Monday, the 49-year-old actress took to Instagram with two carousels of "stunning" photos, posing in a $330 dress by designer Kwame Adusei.

"Alien Guest Star. Hoping to be bumped up to series regular," she captioned the first post for her more than 20 million followers, adding, "BTS from the spaceship," to the second.

Fans were quick to comment on the "Bring It On" actress's "ageless" appearance and praise her for some serious "summer style inspo."

"Ma'am, you are literally aging backward and no one can tell me otherwise. You look amazing! This dress looks beautiful on you. I needed some fresh summer-style inspo and this is it!" one Instagram user commented.

"When are you gonna age?" one fan asked.

"Ageless queen! You look stunning," added another.

"Beautiful! There's no way you're 49. Nope," another commenter chimed in.

Someone else wrote: "Wow! So beautiful!"

"I mean, damn, Gab. I cannot even handle all this hotness. A queen!" one fan added.

"Such a beautiful colour, flawless," commented another.

Union has been living her best life on Instagram this summer. Last month, the wife of former NBA star Dwayne Wade shared a makeup-free video of herself dancing in the sun, wearing a neon green floral bikini paired with a royal blue cover-up and a motivational caption.

"Gettin’ stronger. Havin’ more joy. Creating more boundaries. Prioritizing my peace. Minding the business that pays me. #LegDay #MondayMotivation," she wrote, to which fans responded with praise for her inspirational message and even more commentary on her "ageless" appearance.

"The fact that you’re aging backward," one Instagram user commented.

"Come through, body! You are one of my muses Keep it going, mama!" another added.

One fan wrote: "This woman is ageless!"

"It’s literally not fair that you look this good, sis. Miss you, sending you good vibes for the week ahead! Go crush it!" someone else penned.

"You're such a ray of sunshine omg. Love this so much! You look amazing, and I love the caption. Just what I needed to hear today. Thank you for sharing, queen! x," commented another.

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