Final answer:
The pattern calls for a total of 57 yards of lace trim for the wedding outfit.
Step-by-step explanation:
To find the total amount of lace trim needed for the wedding outfit, we need to add the lengths of lace trim for the dress and the veil. The pattern calls for 34 yards of lace trim for the dress and 23 yards of lace trim for the veil. To find the total, we add 34 and 23, which gives us 57 yards. Therefore, the pattern calls for 57 yards of lace trim in total.