Callie Hernandez taking her jacket off and pulling her dress over her head to go topless as she makes out with a guy. We see her panties and her breasts as she stands kissing him, and is then seen riding him in bed, leaning over as we see her breasts from the side. From Graves.
from Alien: Covenant
Callie Hernandez standing naked in a shower as a guy approaches from behind and kisses her on the neck. We see breasts from Callie as she turns around to face him, pressing him against the shower wall. She then notices an alien approaching the guy from behind, and she gets spattered with blood when the guy meets his end. From Alien: Covenant.