The 'Home' singer's little boy is set to undergo treatment for liver cancer.
Russell Brand is model best man
The actor was restrained as Noel Gallagher's best man, but Liam was a no show
Brand was on his best behaviour at the wedding of Noel Gallagher to long term partner Sarah McDonald.
The comedian entertained guests with his jokes, but managed not to offend anyone.
The wedding took place on Saturday at the Lime Wood Hotel in the New Forest with celebrity guests such as Paul Weller, David Walliams and his wife, Dutch model Lara Stone in attendance.
Notably missing from the big day was Noel's brother and Oasis band mate Liam Gallagher.
The star headed straight from the jungle to panto...but clearly hadn't had time to learn her lines!