Charlie Sheen is pleading (celeb) poverty with his other ex-wife, Denise Richards ... insisting his child support payments to her have to be reduced, just like Brooke Mueller's.
According to tmz, Charlie's filed docs that are almost identical to what he filed nearly 2 weeks ago. Just like Brooke, he says he's been paying $55k per month to Denise. She's been getting that amount since 2009, but now it's too much for him to handle because "my income has drastically declined."
As he did in the Brooke filing ... Charlie lays out his financial hardships -- selling off his "Two and a Half Men" rights and mounting health care expenses.