YA/Romance Book, help me find it. I've searched everywhere can't find its name

YA contemporary series set in the UK. South Asian/Indian teenage girl protagonist who loves fashion. Lives with her father, who works as a caretaker/manager in a luxury apartment building, and they stay in staff accommodation. Mother died years earlier. Hidden cat because pets aren't allowed. Rich residents become her friends; one friend pays for her to join a family vacation. Romance with a wealthy resident. Friends include JJ, Alex, and Alyssa/Alisha. Russian family in the building. Swimming pool scenes. Christmas volunteering/community kitchen scene. Bright illustrated covers with shopping bags; one cover was yellow. Read around 2020–2021 on Internet Archive.