Britney Spears Disses Iggy Azalea After New Song 'Pretty Girls' Release? Instagram 'Garbage Trash' Shade Mistake Amuses Fans [LISTEN]

Britney Spears just collaborated with Iggy Azalea on a song entitled "Pretty Girls." The catchy tune is currently going viral on Youtube, and Spears even sparked a new friendship with the "Fancy" rapper!

But amid such cyber excitement, the "Toxic" beauty overlooked one rather harsh fan post on Instagram... hopefully this doesn't spark yet another epic feud between two Hollywood beauties!

While hyping "Pretty Girls" on social media, the 33-year-old pop sensation "liked" this photoshopped image that actually shades 24-year-old Azalea:

Notice that in the pic, a cartoon image of the Australian singer is replaced with a heeping garbage bag. Obviously, this specific listener thinks that Azalea is "trash" compared to the "Work B*tch" muse.

Oops! Spears probably didn't even realize that the snapshot was altered in such a way to degrade Azalea. She really holds no hard feelings against the"Black Widow" superstar:

"[Iggy] was very, very cool, it was so weird I saw her video and I was just a huge fan and I was thinking about my next single for my next album and what I was gonna do and I wanted a girl anthem," Spears explained during a recent radio interview with Z100. "That was kinda funny, and I thought the whole take on Valley girls and just kinda making fun of that whole thing would be fun for us to do."

As for when they first met:

"She invited me to her house and I met her dog and we had salads, she's a just very sweet girl. We hit it off, it was so much fun to work with her, I think she's from Australia so she has an accent. She's funny, she's really cool."

"Sweet" and "cool" are not phrases to be confused with "trash" or "garbage!" Should Spears pay more attention to her actions on Instagram from now on, though?