The official weigh in event for UFC 141: "Lesnar vs. Overeem" is set to took place today (Dec. 29, 2011) at the MGM Grand Garden Arena in Las Vegas, Nevada.

And while Nate Diaz and Donald Cerrone managed to remain cordial during their staredown, it came after Diaz missed weight by one pound, weighing in at 157-pounds, just over the 155-pound lightweight limit.

He'll have one hour to lose the additional baggage.

UFC 141 will be headlined by the return of former heavyweight champion Brock Lesnar, returning from intestinal surgery to welcome ex-Strikeforce and K-1 champion Alistair Overeem to the Octagon. In lightweight action, Donald Cerrone will try to continue his rise to the top of the division against the dangerous Nate Diaz in the co-featured fight of the night.

Check out complete UFC 141 weigh in results after the jump:

265 lbs.: Brock Lesnar (266) vs. Alistair Overeem (263)
155 lbs.: Nate Diaz (157)* vs. Donald Cerrone (156)
170 lbs.: Jon Fitch (171) vs. Johny Hendricks (170)
205 lbs.: Alexander Gustafsson (203) vs. Vladimir Matyushenko (205)
145 lbs.: Jim Hettes (145) vs. Nam Phan (146)
145 lbs.: Ross Pearson (145) vs. Junior Assuncao (145)
155 lbs.: Danny Castillo (156) vs. Anthony Njokuani (154)
155 lbs.: Efrain Escudero (155) vs. Jacob Volkmann (155)
170 lbs.: Luis Ramos (171) vs. Matt Riddle (170)
170 lbs.: Dong Hyun Kim (171) vs. Sean Pierson (171)
145 lbs.: Manny Gamburyan (146) vs. Diego Nunes (145)

*Diaz has one hour to lose the additional pound

For those fortunate enough to be in "Sin City" this afternoon, remember the weigh-in is FREE to attend and open to the public. Doors to the weigh-in will open at 1 p.m. PT. In addition, UFC Fight Club members will be able to attend a special Q&A session with UFC heavyweight champion Junior dos Santos at 2 p.m. local time.

Remember, too, that MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of UFC 141 tomorrow night (Fri., Dec. 30, 2011), which is slated to air at 10 p.m. ET on pay-per-view. The latest quick updates of the live action will begin to flow earlier than that around 7 p.m. ET with the preliminary bouts.

For the latest UFC 141: "Lesnar vs. Overeem" news and notes check out our event archive right here.