Demi Lovato at the Grammys 2016

At Rehearsals For Her First-Ever Grammys Performance

Demi started the weekend with a memorabilia signing session at rehearsals for her performance honoring MusiCares Person of the Year Lionel Richie.

1 / 14

On the Red Carpet For the 2016 MusiCares Person of the Year Event

Image Source: Getty / Michael Kovac

Looking elegant in a black Lorena Sarbu dress, Demi got ready to perform at the pre-Grammys event.

2 / 14

Image Source: Getty / Jason Merritt

Her slicked-back hair and soft makeup let the details of her dress take the spotlight.

3 / 14

Performing at the 2016 MusiCares Person of the Year Event

Image Source: Getty / Kevork Djansezian

Demi took the stage to perform "Hello" during the private ceremony on Feb. 13.

4 / 14

Image Source: Getty / Lester Cohen

Of course, she sang her heart out.

5 / 14

Taking the Stage With Lionel Richie

Image Source: Getty / Jason Merritt

To finish the night, Demi took the stage with Lionel and other performers, like Lenny Kravitz and Little Big Town, to sing "All Night Long."

6 / 14

At Lucian Grainge's Universal Music Group Artist Showcase

Image Source: Getty / Alberto E. Rodriguez

Posing with ex-boyfriend Joe Jonas and his band DNCE, Demi stopped by a pre-Grammys party, where she also performed.

7 / 14

Celebrating Valentine's Day

Demi's boyfriend, Wilmer Valderrama, took to Instagram to say Valentine's Day was all about celebrating Demi.

8 / 14

Wearing Some New Diamonds

Demi's new diamond ring, a present from Wilmer, blinded us all.

9 / 14

Walking the Red Carpet at the Grammys

Image Source: Getty / Steve Granitz

In a Norisol Ferrari blazer and skirt and a long Loree Rodkin body chain, Demi walked the red carpet at the 2016 Grammy Awards sans Wilmer.

10 / 14

Image Source: Getty / Steve Granitz

Demi's long hair extensions and natural makeup brought us back to her Camp Rock days.

11 / 14

Getting Support From Her Boyfriend, Wilmer Valderrama

Image Source: Getty / Christopher Polk

The singer linked up with her longtime boyfriend before hitting the stage for her first-ever Grammys performance.

12 / 14

Performing at the Grammys

Image Source: Getty / ROBYN BECK

Demi left everyone in awe with her strong vocals during her performance of "Hello."

13 / 14

With Lionel Richie on Stage

Image Source: Getty / Kevork Djansezian

Lionel joined Demi, John Legend, Meghan Trainor, and Tyrese at the end of the performance.

14 / 14