La nipote (1974)

This one’s got a bit of everything: a brunette MILF, her slim blonde niece, and a guy in a suit who gets busy with both. The action starts slow, with the MILF in a dress making out with him while the younger girl watches. Things escalate quickly — the blonde joins in, and it turns into a full-on threesome. The guy spends time with both women, kissing one while fingering the other. The camera gets nice and close during the oral parts, so you see everything. There’s a mix of positions, but the standout is when the MILF rides him while the blonde sits on his face. The dynamic between the three feels natural, not overly scripted.