Birthday balloon messages for your sister
7 messages written for your sister specifically — they name the relationship, so the balloon reads like it was meant for one person rather than pulled off a shelf. Character counts are on every one.
classic
The straight version. Nobody has ever been annoyed to receive one.
Happy Birthday, Sis
19 characters · fits a 16" bubble
heartfelt
Says the actual thing. Best on a bigger balloon where the words have room.
Still the one I'd call first
28 characters · fits a 18" foil round
Happy birthday to my first friend
33 characters · fits a 20" bubble
funny
Lands best with people who would rather be teased than complimented.
My oldest partner in crime
26 characters · fits a 16" bubble
Best sister in the business
27 characters · fits a 18" foil round
cheeky
Affectionate insult territory. Know your audience.
Sis, you're the favorite. Sorry
31 characters · fits a 18" foil round
Grew up with you, still like you
32 characters · fits a 18" foil round
General birthday messages
These do not mention your sister, so they work on any birthday balloon. Useful when the balloon is going in a group gift.
Go big
6 characters · fits a letter balloon banner
Make a wish
11 characters · fits a letter balloon banner
Happy Birthday
14 characters · fits a letter balloon banner
Birthday royalty
16 characters · fits a 11" latex
Hope it's a good one
20 characters · fits a 11" latex
Happy birthday, legend
22 characters · fits a 16" bubble
The whole day is yours
22 characters · fits a 16" bubble
Cake first, questions later
27 characters · fits a 18" foil round