21th Happy Birthday Demi Lovato

Demi Lovato Tweets About "Best Birthday Ever in Africa," Reveals What She Got (You'll Never Guess What It Is!)

Demi Lovato will always remember her 21st birthday.

Not only is this a milestone age for the X Factor judge, but the singer's special day was also an extra memorable celebration since she spent it in Africa. And it seems like she wouldn't have wanted it any other way.

"This trip has been such an amazing experience. Yesterday was the best birthday of my entire life!!!" Lovato tweeted on Wednesday, with a photo of herself and a birthday cake full of candles.

"This place is absolutely incredible. I'm so in love with Kenya. I'm so sad I'm leaving....," the star continued, and then revealed her eccentric birthday gift. "Btw... No big deal or anything but... One of Maasai communities gave me a GOAT for my birthday!!!!!! ...I named him billy," she wrote.

On Tuesday, the actual day of her birthday, Demi tweeted, "Thank you all for the birthday wishes!!! Having the best birthday ever in Africa with @freethechildren!!!," along with a picture of herself doing some manual labor.

The celeb traveled to Africa to do some charity work with Toronto-based youth organization Free the Children, but regardless of the distance, Lovato received some special b-day love from ex-boyfriend Wilmer Valderrama.

"I've been so proud of the strength & commitment you've gained 4 life, keep inspiring us all!" the 33-year-old actor tweeted. "Happy birthday my @ddlovato! With & by u always."

So sweet.