Sierra moved on from her relationship with Lip and is not seen in later seasons.
Sierra, a character introduced in Season 7 of “Shameless,” becomes a significant love interest for Lip Gallagher. She is a single mother working as a waitress alongside Lip at Patsy’s Pies. Throughout the season, they develop a relationship, but it’s fraught with challenges, including issues with Sierra’s ex-boyfriend and the father of her son, Charlie.
In Season 8, their relationship continues to be tested. Sierra finds out that Charlie has been cheating on her, and Lip supports her through the ordeal. However, Lip’s own struggles with alcoholism and his complex feelings for another woman, Tami, begin to affect their relationship.
By the end of Season 8, Sierra and Lip’s relationship has deteriorated, and she decides to give Charlie another chance for the sake of their son, Lucas. This decision marks the end of her romantic storyline with Lip. Sierra’s character does not return in the subsequent seasons, and her life beyond her last appearance is not explored in the series. The show focuses on Lip’s journey and his new relationships, leaving Sierra’s story concluded with her attempt to rebuild her family with Charlie.