Nicki Minaj Not Filing Police Report Against Cardi B After Shoe-Throwing Attack

Nicki Minaj isn't going to the cops after Cardi B went after her at a New York Fashion Week party Friday night ... because it really didn't bother her at all.

Sources close to "Chun-Li" rapper tell TMZ ... even though Cardi's shoe-throwing attack at the Harper's Bazaar party Friday night was a shock -- her security handled it and Nicki was totally fine.

We're told Minaj was unscathed and nobody on her team was injured either ... so she sees no reason to file a police report and carry on with the drama.

As for Cardi -- who was left with a lump on her head after the ruckus she started -- law enforcement tells us she hasn't filed a police report either. People connected to Cardi told us they believe she got the lump from being elbowed by someone on Nicki's security.

We broke the story ... Cardi reached a breaking point after Nicki making comments about her fitness as a mom. Judging from Cardi's own words, she was looking for a fight. She never made contact, either with her fists or her shoe.