Here's why:
* Gerund Phrase: A gerund phrase is a group of words that acts as a noun. It starts with a gerund (a verb ending in "-ing" used as a noun).
* Direct Object: A direct object is the noun or pronoun that receives the action of the verb.
In this sentence, Gigi is the subject, "enjoys" is the verb, and the action of enjoying is directed towards "shopping on Rodeo Drive". The gerund phrase tells us what Gigi enjoys.