She's already amassed more than 3,000 followers, and this story has hit media outlets from Brazil to Belgium.
Here's a sample of some of her first tweets:
IvyBean104 Hello had a nod just having a cuppa and biscuit im excited to be on twitter
IvyBean104 just had breakfast now chatting to my friend mabel
IvyBean104 Deal or no deal in 4hrs
IvyBean104 im having a rest now had a busy morning thankyou everybody
She's also been sending @ replies and interacting with users.
Here's some of the initial buzz about one of Twitter's newest members:
Pretty313 (Michigan, USA) @IVYBEAN104 hello & its an honor to follow you *hugzs*
geekgirl444 (Kent, England) Just so sweet that @IvyBean104 follows @GeekSquadUK.
jaime_ldn (Undisclosed) Is it too late to #followfriday? @IvyBean104 She IS 104. God bless her. Thanks to @bruxedo, follow him too.
weeelady (Scotland) This marvelous lady is 104 years young and a keen twitterer. Please follow @IvyBean104