According to TMZ.com
, court papers were filed late Thursday afternoon in an Alaska courthouse, demanding that Levi pay Bristol $1,750 a month in child support, retroactive to the birth of their son in December of 2008.
Palin alleges that Johnston made over $105,000 during 2009 thanks to various interviews, television appearances, and most famously his nude modeling for playboy.
Palin's team most likely picked the $105,000 threshold because under Alaska law, a non-custodial parent must pay 20% of their income up to that $105,000 amount, which equals about $1,750 a month.
In a sworn statement, Palin alleges that Johnston has only paid her sporadically since their son Tripp was born. She claims she received just $3,000 in September of last year, and $1,400 in December.
Levi's manager counters that Johnston has paid Bristol over $10,000 since the birth of Tripp, and that Palin's attorney is estimating more money that Johnston has actually made, but would no specify an exact amount.