One of the most popular singing teens of today celebrates her 21st birthday, Demi Lovato! Most her age will party out and drink the night away during their special day but the former Disney star decides to share her blessings instead to a charity that extends help to the not so privileged ones in Africa.

Ms Lovato decides to spread a lot of love through the charity named as Free The Children. It is an educational partner that renders assistance to the youth to be more proactive in community activities and make this world a better place.

Check out the slideshow for more photos of birthday gal Demi Lovato!

To make her birthday more memorable, here are top seven things you never knew about this young star:

1 A Hardworker!

Not many knew that Ms Lovato went through two tryouts at Disney before she landed a role in 'As The Bell Rings.' In fact, according to the Wall Street Journal, there was Selena Gomez too during the audition who then got the part but Ms Lovato went home the first time around.

2 Favourite Bathroom Song

When she belts it out in the shower, Ms Lovato told MIX in one interview that her favourite song to sing is the US national anthem.

3 Mum's A Former Cheerleader

Ms Lovato's mum used to be a Dallas Cowboys' cheerleader way back in year 1982. Now, her mum is the one sitting on the sidelines and cheering her extremely famous daughter.

4 Sweet Tooth

The young singer and X Factor judge loves eating sweet delights especially M&Ms plus Aero bars.

5 Tattoo Fanatic

She may be a pure Disney star but to mark how she overcame her life's scars, she's been getting a lot of tattoos to support herself with encouraging messages. Her most popular ones include those that cover her wrist so as to cover her scars from 'cutting.'

6 Favourite Stars

Apart from being idolized by her own set of fans, Ms Lovato is also a fan herself of other celebrities like Hilary Duff, Natalie Portman, Matt Damon Jake Gyllenhaal, Sienna Miller and Winona Ryder.

7 Barney & Friends

Ms Lovato started out as a child actress for 'Barney & Friends' where she started sharing the screen with real life BFF Selena Gomez.

Once again, happy birthday Demi Lovato!