'Bravo'! Robert Downey Jr. 'honored' to make this kid's day [video]

Honored to present a bionic #IronMan arm to Alex through @MSOneNote’s #CollectiveProject. Check the bowtie. #dapperhttps://t.co/lhLG5g1RP8

— Robert Downey Jr (@RobertDowneyJr) March 12, 2015

@RobertDowneyJr @msonenote this is adorable

— Sophie Davis (@Sophiedavis9) March 12, 2015

@RobertDowneyJr @msonenote I'll cry that's beautiful

— mari (@marveliosa) March 12, 2015

@RobertDowneyJr @msonenote THIS IS AMAZING

— cansu (@cansustark) March 12, 2015

@RobertDowneyJr you rock dude!!

— Just A Poor Man (@ComicRwilliams) March 12, 2015

@RobertDowneyJr @msonenote that's really sweet

— paula (@DowneyObrien) March 12, 2015

@RobertDowneyJr @msonenote That is awesome, man.

— Matthew Miller (@matthewmspace) March 12, 2015

@RobertDowneyJr @msonenote that was so kind. So proud of you

— Angel With A Shotgun (@isa_ruiz03) March 12, 2015

@RobertDowneyJr @msonenote what a beautiful child his face when he looked at you was so cute. Incredible project.

— Camila. (@snapoutofmonos) March 12, 2015

@RobertDowneyJr you are the best! #ChangingLives

— ZeldaZonk (@aliVee) March 12, 2015

@RobertDowneyJr @msonenote THAT is what it is all about. Bravo Robert!!!!

— Darth Alphad (@whitedogtech) March 12, 2015

@RobertDowneyJr @msonenote that's incredible and you made him so happy, it's made my day ?

— j e m (@xHiddles) March 12, 2015

@RobertDowneyJr @msonenote Robert, that was an awesome thing to do.

— Steve Mallows (@stevemallows1) March 12, 2015

@RobertDowneyJr @msonenote dang, it was so cool. Seeing the joy on the kid's face is priceless ?

— Abie (@abipluse) March 12, 2015

@RobertDowneyJr @msonenote What a great man and a great story. Kudos to you, Robert.

— Bryan Bouldin (@bryan_bouldin) March 12, 2015

@RobertDowneyJr @msonenote that’s pretty freakin’ epic. Great stuff.

— William Fairaday (@Fairaday) March 12, 2015

This is absolutely brilliant from @RobertDowneyJr! #CollectiveProject

— Dan Chapman. (@iDanTheGunner) March 12, 2015

@RobertDowneyJr @msonenote this is so sweet ???

— nuri (@givemeoxygen) March 12, 2015

@brianhund @RobertDowneyJr @msonenote @MrMokelly just about the coolest thing I've seen in a while!

— Tawala Sharp (@Tawala) March 12, 2015

@RobertDowneyJr @msonenote i'm having a technical glitch too. It's called tears in my eyes. Well done

— Christopher Kelly (@ChrisMKellySr) March 12, 2015

@RobertDowneyJr this is so damn cute, you're amazing Robert and I hope you realise how much happiness and love you spread!

— ♛ (@starkcoulson) March 12, 2015

It is extraordinarily cool of you to do that for the kid. @RobertDowneyJr @msonenote

— Aaron Worthing (@AaronWorthing) March 12, 2015

@RobertDowneyJr @msonenote RDJ you are a true class act! I'm glad that Hollywood still has people like you in it!

— jason rosso (@jasonrosso) March 12, 2015

@RobertDowneyJr Bravo, sir. Brilliant cause and a brilliant way to get involved & give back to help a young #IronMan fan. @msonenote

— DH Gamer (@DHGamerMR) March 12, 2015

@RobertDowneyJr Honestly you have a heart of gold. This brought happy tears to my eyes

— ૐ (@madisonIynn) March 12, 2015

@RobertDowneyJr bobby thanks for doing this, you're a real hero, without cape or an armor?? I'M SO PROUD TO BE YOUR FAN

— camila | 23 days (@rxbertmichael) March 12, 2015

@RobertDowneyJr @msonenote you know, you're really awesome

— downeyjr. (@JonasFansNation) March 12, 2015