None really. Hayley appears nude in a few episodes but nothing is seen.
Bullocks to Stan
The Worst Stan
She Did. In the Episode where Stan Visits his Native American half-brother.
In Country Club
season 3 - haylias
Bullocks to Stan
The Worst Stan
She Did. In the Episode where Stan Visits his Native American half-brother.
She voices a stripper in Stan Knows Best
In Country Club
season 3 - haylias
Season Two's Stannie Get Your Gun
Son of Stan
watch American dad episode 'Son of Stan'
season 4 episode 64, where he dates his daughter.
Son of Stan | Season 6 | Episode 2
The episode is called Roger 'n' Me and is from the first season.