Single teen mom Bristol Palin is demanding $1,750 a month in child support from ex BF Levi Johnston.
TMZ.com reports Palin, 19, believes Johnston, also 19, has earned an "excess of $105,000 in 2009 from various media interviews and modeling related activities." Levi memorably posed nude for Playgirl magazine in October.
In a sworn statement, Bristol says, "I have received limited and sporadic financial assistance from Levi."
Bristol gave birth to son Tripp on Dec. 27, 2008, and the couple broke up at the beginning of 2009.