Credit: Doug Meszler / Splash News Photo: Teresa Giudice Films Celebrity Apprentice 5

When a Real Housewife of New Jersey throws a birthday party, get ready for fireworks along with ice cream and cake! Wetpaint Entertainment has exclusive details from the birthday party Teresa Giudice threw last weekend for her daughters Milania and Gia and they include a conflict with fellow RHoNJ housewife Melissa Gorga, who attended the bash with her children.

Wetpaint Entertainment spoke with another mother whose child was invited to the party, at Space Odyssey in New Jersey, and here is what we learned: the party was on Saturday January 28, not Sunday, but for some mysterious reason, Teresa has told numerous people that the party was on the 29th. Teresa even posted on her website that the party was on Sunday. Go figure!

Clues that a conflict was in the works emerged early on when a Space Odyssey employee, Natalia Velandia, tweeted “Confused if this lady here for Teresa’s Guidice party is Melissa Gorga.”

The woman in question was, in fact, Melissa.

Natalia then tweeted, “I wanted to take a picture with her but I couldn’t cause her and Teresa were arguing and my boss would’ve killed me.” Our source says: “When a photographer went over to ask Teresa if he could take a picture of Melissa, Teresa said ‘no.’ ”

Even so, Melissa was enjoying herself – at first. “She was having a great time and spent most of the party with her mother-in-law,” says our source. “She said ‘hello’ to Joe Giudice. He was nice, and Melissa was nice right back to him. Milania and Antonia [one of Melissa’s kids] were hugging and dancing the whole time. ”

Our source says Teresa looked annoyed watching Melissa during the party and that when Melissa was getting ready to leave and saying her goodbyes to everyone Teresa approached her.

At this point, while other mothers were getting their coats to leave, Teresa and Melissa were suddenly face to face. Says our source: “Teresa started to get loud, and you could see Melissa was struggling to keep the scene low-key, because her youngest son, Joey, was in her arms.”

As for why Melissa’s husband Joe Gorga didn’t attend the party, another source reveals, “Teresa had a family party at her house for Gia in early January with immediate family, and Joe and Melissa weren’t invited to that.” When Joe Gorga tweeted that he wasn’t invited to Gia’s birthday, that’s the party he was talking about, says our source, not the public extravaganza at Space Odyssey that Melissa and her kids did attend.

We called Melissa’s representative for comment and more details, but did not hear back. Teresa’s reps didn’t respond to our calls either.