This is the list of Twitter's ten most retweeted tweets of all time. And I did not forget Justin Bieber. As you see below, one of his tweets has 120k RTs and this tweet is the winner of "most retweeted tweet of all time".
1. Justin Bieber (200K+)
RIP Avalanna. i love you
- Justin Bieber (@justinbieber) September 26, 2012
2. T.J. Lang (98K+)
Fuck it NFL.. Fine me and use the money to pay the regular refs. - TJ Lang (@TJLang70) September 25, 2012
3. Floyd Mayweather (89K+)
Manny Pacquiao I'm calling you out let's fight May 5th and give the world what they want to see. - Floyd Mayweather (@FloydMayweather) January 10, 2012
4. Kim Kardashian (68K+)
A 15 year old girl who is terminal w/ cancer has made a bucket list. 1 of her wishes is to trend on Twitter. Give a RT #alicebucketlist - Kim Kardashian (@KimKardashian) November 27, 2011
5. Barack Obama (61K+)
"Same-sex couples should be able to get married."-President Obama - Barack Obama (@BarackObama) May 9, 2012
6. Lady Gaga (34K+)
Never be afraid to dream. - Lady Gaga (@ladygaga) June 17, 2011
7. Katy Perry (33K+)
The new song Skyscraper by @ddlovato is pure perfection. Her voice is one of the BEST undiscovered beauties. Can't wait for the full record. - Katy Perry (@katyperry) July 13, 2011
8. Selena Gomez (32K+)
SO, SO proud of @ddlovato #skyscraper Incredible, beautiful and so inspiring.. - Selena Gomez (@selenagomez) July 12, 2011
9. Rihanna (29K+)
Welcome to the world princess Carter! Love Aunty Rih - Rihanna (@rihanna) January 8, 2012
10. Taylor Swift (25K+)
I'm so 22 right now. - Taylor Swift (@taylorswift13) December 13, 2011