Demi Lovato\'s Little Sister Madison de la Garza Looks Unrecognizable at Sweet 16 (PHOTOS)
Demi Lovato Live Chat At Cambio Studios
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Demi Lovato

Demi Lovato’s Little Sister Madison de la Garza Looks Unrecognizable at Sweet 16 (PHOTOS)

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Talk about a glow up!

Demi Lovato's little sister, Madison de la Garza, just celebrated her Sweet 16, which is enough to wrap our heads around.

But when you see what the gorgeous star looks like now, you literally won't believe it's the same person.

You probably associate the former child star with Desperate Housewives — she played Eva Longoria's daughter, Juanita, on the show from 2008-2012.

But now, little Maddie is all grown-up and bonafide stunning.

The Dallas, Texas native celebrated her Sweet 16 on Monday, December 18 with friends and family in tow, including half-sister, Demi Lovato (Demi and Madison have the same mom, Dianna Hart).

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And while eyes were certainly on Demetria's stunning look, it was hard not to notice how different Madison looks these days.

In this full-body shot posted to the pop star's Snapchat, for instance, Madison revealed her dramatic weight loss in a white flowy romper with a removable skirt. 

She accessorized with a bejeweled crown fit for a bride princess.

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“Look at how gorgeous you look! So gorgeous!” big sister Demi gushed.

The sisters and their pals danced the night away to hits like Fergie's “Fergalicious,” Justin Timberlake’s “Rock Your Body,” Jason Derulo’s “Swalla,” DJ Khaled‘s “Wild Thoughts,” and the 25-year-old own collaboration with Luis Fonsi, “Not On You,” according to People.

What, no "Sorry, Not Sorry?"

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The cake, a three-tiered blue confection topped with the letter "M," was quite a nice touch, too!

And though Demi only spoke to her half-sister for the first time when she was 20, the two are basically BFFs now.

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In fact, she partly credits Madison for why she eventually got sober.

In September, the former "Sonny With a Chance" star opened up about her sobriety, admitting she was banned from seeing her little sister until she cleaned up her act.

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“I knew that I had a lot of life ahead of me but one of the main reasons of getting sober was so that I could be around my little sister because my mom and dad [said I couldn’t be around her] if I was doing stuff,” she explained.

Now, five years later, the Grammy nominee is still sober and as close as can be with Madison — win/win!

What do you think of Madison's grown-up look? Did you realize she and Demi were related? Tell us below!