What isa baby shower

Suky • Mama to be 😇 Mu little Rainbow 🌈 will be here in September 🐣 I love her already
Hi Mamas, Im not from place where we have baby shower when the baby not born yet, i wanna have one i wanna know what it us n what dhould i cook just cake n sweets or food like meals ? And what should i plane for ? Please help i have no one here inviting my husband's friends n wives !