Nicki Minaj ON TOP ... of National Cleavage Day!

3/30/2012 2:45 PM PDT BY TMZ STAFF
Nicki Minaj has perfect timing -- because her chesty "American Idol" performance was the perfect table-setter for National Cleavage Day! Thanks NIcki ... we'll take it from here.

Check out TMZ on TV -- click here to see your local listings!