[artist id="3061469"]Lady Gaga[/artist] has been on an epic, record-setting tear, packing 'em in at concerts, selling millions of records and recently smashing previous marks for downloads, [article id="1642960"]Facebook fans[/article] and [article id="1634663"]total online video views[/article].

But a girl can't have it all, right? After a heated battle, Gaga went down in rare defeat on Thursday, when Justin Bieber surpassed her to set a record for the most-watched music video in YouTube history. At press time, Bieber's "Baby" collabo with Ludacris had logged 245,746,720 views, pushing past Gaga's epic "Bad Romance" clip, which was not far behind with 245,596,709.

Now, given Gaga's rabid fanbase of little monsters, there's no doubt this pitched battle will continue and perhaps see a few more lead changes, but for now, the Biebs has emerged victorious.

Bieber, in the midst of doctor-imposed vocal rest while on tour, reacted to the news with delight, tweeting on Thursday, "what is goin on with the 'Baby' video on YouTube is crazy ... I started on YouTube so the support ... well I just need to say thank u."

Showing he was raised right and is a good sport, he followed that tweet with a flip of his bowl cut to his rival, writing, "someone just showed me and I just need to say that @ladygaga is an incredible artist who have great respect 4. And her vid is incredible ... so it doesn't matter who has more views, what matters is that we have incredible fans that support us ... that I'm sure we are both grateful 4."

Then again, winning feels kinda sweet, so he did do a bit of Twitter victory lap. "So thanks ... like I said, I started on YouTube so ... WOW!! Love u and wish u all the best in each and every one of ur lives. Thanks Beliebers!"

And in case the race got close again, his next post was a link to the video.

Trailing way behind on the list of most-watched music videos on YouTube are: Miley Cyrus' "Party in the U.S.A." (138.6 million), Pitbull's "I Know You Want Me (Calle Ocho)" (131.8 million), Miley Cyrus' "7 Things" (125.2 million), Lady Gaga's "Just Dance" (117 million), Shakira's "Waka Waka (This Time for Africa)" (101.7 million), Miley Cyrus' "The Climb" (100.1 million), Vanessa Hudgens' "Say OK" (89.1 million) and Timbaland and OneRepublic's "Apologize" (87.4 million).

What's your favorite music video of all time? Write in your comments below.