The original idea was to hold the party for friends and neighbors only, but he has since confirmed he would not turn anyone away.
Her dad, Crescencio, had said in the video invitation that went viral: "Hi, how's it going?"
At the end of the video, Ibarra says that everyone is cordially invited. A large billboard saying "Welcome to my 15th birthday party" with Rubi's picture towered over the tents and tables filled with food. It got SO insane that the Mexican airline Interjet even offered a 30-percent discount on flights!
But later that day, shortly before 6 p.m., a horse race, offering a prize of 10,000 Mexican pesos - almost $500 USA - ended in the death of 66-year-old Felix Pena, an owner of one of the horses that participated in the traditional horse race held to pay tribute to the "transition from childhood to young womanhood". "I just ask for your patience so that we can all enjoy this party".
Magnitude 7.7 quake strikes Chile, tsunami warning issued
That quake struck off the Pacific coast about 60 miles northwest of Chillan, Chile, at a depth of almost 22 miles, the USGS said. But despite the powerful nature of the Sunday event, there have been no reports of any major damage or fatalities in the area.
Sadly though, the event was still marked with tragedy after one man died during a planned horse racing event. NBC also claims that there is a video of the extremely tragic and disturbing incident that people have posted online. About 1.2 million people joined the event page on Facebook while thousands attended the event in person.
The race was canceled following the accident.
Reports state that Rubi's family members had to make a path for her to pass through all the photographers and reporters taking pictures of her, so that she could reach the Mass organised for her in a field in San Luis Potosi.
Local media reported the final crowd was far less than her parents feared, although thousands still turned up.
We're sure there will be more insane stories pop up from this MASSIVE event, so stay tuned while we wait to hear about what went down...