Crib or toddler bed?

I have a 20 month old daughter and I’m due in December. I’m debating on if I should buy another crib or just buy a toddler bed and use my daughters crib for her baby sister/ or brother. The crib is a 3 in 1 crib solid wood with all the bells and whistles. I feel bad to kick her out her crib when the baby comes but I don’t want to have two cribs to take up so much space. Do y’all have any recommendations.