The feud between Kelly Osbourne and Lady Gaga has been going on for quite from time (since 2009, to be exact) and while it’s been a minute since we’ve where these two stand with each other, that all changed when Gaga appeared on The X-Factor UK last Sunday – the same show Kelly’s mother Sharon Osbourne is a judge. It all went down after Gaga gave Sharon a cake to celebrate Kelly’s 29th birthday but it appeared that the birthday girl wasn’t too happy about it.

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Kelly took to Twitter to respond, "Not to be ungrateful but why would you send me a birthday cake via my MOTHER in a country half the [world] away? #JustSendItToME #LoveNotWar.” She then posted the photo of the cake on her Instagram and captioned it with, #EatMyS--t #Hypocrisy." Yikes!

Gaga responded to Kelly’s not-so-grateful tweets by writing to her, “I didn’t know it was your B-day until this afternoon. Meant as a peace offering. Happy Birthday.” How did Kelly respond? With this: "#StefaniStopIt!" and "I live for a #Cause not for the #Applause!!!!!!!"

But it appears that Kelly realized that maybe Gaga really was trying to make peace and tweeted, “@ladygaga I acted like a child last night. Just not into publicity stunts call me & we will end this like adults I dont want 2 fight anymore.” Maybe Kelly just needed to sleep on it to realize how silly this all was.

What do you make of all this Kelly vs. Gaga drama?

Did Kelly overact?