As you probably already know, this December has been a festive, butterfly kiss of a month for Mariah Carey. Tap to play or pause GIF Tap to play or pause GIF Mariah Carey/ giphy.com Her classic, "All I Want for Christmas Is You," went No. 1, 25 years after its release (making it her 19th No. 1). Tap to play or pause GIF Tap to play or pause GIF Sony Music Which is a HUGE deal! She has the most No. 1s of any solo artist and is second only to the Beatles (who have 20 No. 1s). Getting her 19th No. 1 in 2019 also allowed Mariah to join another exclusive club: The list of female solo artists that have No. 1s on the Hot 100 in three consecutive decades (which is LEGENDS ONLY): chart data @chartdata Female soloists with #1 hits on the Hot 100 in three consecutive decades: • Mariah Carey • Britney Spears • Madonna • Christina Aguilera • Janet Jackson 05:54 PM - 16 Dec 2019 Reply Retweet Favorite Well, "AIWFCIY" is the gift that keeps on giving 'cause it has allowed Mariah to now enter her own club: Artists who have had No. 1s on the Hot 100 in four consecutive decades: billboard @billboard .@MariahCarey has now ranked atop the #Hot100 in the '90s, '00s, '10s & '20s. https://t.co/8v6asgsYMU 06:17 PM - 30 Dec 2019 Reply Retweet Favorite Yup, Mariah will have the first No. 1 song of 2020! Tap to play or pause GIF Tap to play or pause GIF giphy.com Of course, Mariah responded to the big news in the most Mariah way: Mariah Carey @MariahCarey Yaaaaaaaaay!!! WE. DID. IT. 🐑🍾🎊🎉💖🥳🤯 But.... what’s a decade? https://t.co/OaNK23GFuN 08:24 PM - 30 Dec 2019 Reply Retweet Favorite And, of course, celebrated it in the most Mariah way: Mariah Carey @MariahCarey Celebrating on the move! 🥳🥳🥳 10:26 PM - 30 Dec 2019 Reply Retweet Favorite There you have it, Mariah ending a decade and starting a new one like a true icon! Tap to play or pause GIF Tap to play or pause GIF giphy.com Also, she probably ended this decade still not knowing who J.Lo is.