This is the list of how Demi Lovato celebrated her birthdays.
Demi spent her 16th birthday at Applebee's.
Demi threw a party for her 17th birthday.
18th BirthdayJonas Brothers attended her birthday party. 
19th BirthdayTiffany Thornton and Hunter Parrish. 
Birthdays are all about celebrating life, and people are very blessed to even make it to 21, So the last thing I think anyone should be doing on their birthday is poisoning themselves [by drinking].
—Demi told Philadelphia's Mix 106.1.
On 22 August 2013, Demi tweeted that one person gave her a goat for her birthday.
22nd BirthdayWilmer Valderrama at Disneyland.
23rd BirthdayBatman after the death of her previous puppy Buddy.