Magento 2 – Get all options from a quote item

I need to get all the configurable items related to an item in the cart. For example, if the cart item is of a size “XL”, then I need to get all the other options like “S”, “M” and “L” together with their attributes.

I get all the cart items using the following method:

$items = $cart->getQuote()->getAllVisibleItems();

And then I try:

foreach( $items as $item ) {
  foreach ($item->getOptions() as $option) {
    // Here I need to get the attributes for each option but I'm not sure how to go about that
  }
}

Is getOptions() the way to go?

Thanks!