Hallee Sorenson was devastated when no one turned up to her 18th birthday party last year.
The US teen, who has autism, spent her birthday waiting at a bowling alley to celebrate with her classmates, but no one showed up.
![The heartbreaking photo from Sorenson's birthday last year. Photo / Facebook](https://www.nzherald.co.nz/resizer/v2/FBMD7FJJ642ILZ6WGJQ4PYCWNI.jpg?auth=77d0d76442d56886f6d1d859ad774aed18dfd76d49683d8b43e0a77641a30d45&width=16&height=9&quality=70&smart=true)
This year, Sorenson's cousin took action to ensure her 19th birthday would not be like last year's.
Sharing a photo from Sorenson's party for one, Rebecca Guildford appealed to social media to "flood" her cousin's mailbox with birthday cards and gifts.