Rihanna, Beyonce Beef over no invite to 'Beyonce' album release party, Jay Z cheating rumors causes Beyonce to push Rihanna away

A Beyonce and Rihanna beef is boiling after Beyonce allegedly doesn't invite the "Diamonds" singer to her album release party at Dave & Busters in New York City according to Mediatakeout.com.

Rihanna didn't take the invite snub seriously and was later spotted at the New York City nightclub, the PINK ELEPHANT with many male friends.

An insider revealed told the site, "Rihanna and Beyonce have always had a very cordial [relationship], but they are definitely competitors. I think Beyonce is JEALOUS of Rihanna.

The source added, "First there were those Jay Z rumours, and lately people are acting like Rihanna [is] the top girl in the game. . . . [I think] Beyonce definitely pulled a power play and let Rihanna know who the Queen is."

Is there a rivalry?