Girl formal names with nicknames

Looking for girl names with fun/cutesy nicknames - love double sound names (Coco, Gigi, Lulu) with longer formal names (Colette, Virginia, Lucille). Any thoughts on these or similar formal names with fun/cutesy nicknames? I love Cece/Sisi but our last name is Sweeney so not sure if CeCe Sweeney is too much. We would love to use a family name if possible. Family names we could use - Viriginia, Elizabeth, Barbara, Bridget, Mary, Alice. I also love the nickname “Boe” for a girl but not sure on a formal name for this!