Festoon (verb)

1. To decorate with garlands or hanging ornaments.
2. To hang or drape in a decorative way.

Origin:

From french feston, from italian festone "ornament, garland", from festa "festival".

Examples:

1. The room was festooned with streamers and balloons.
2. The arches were festooned with flowers.
3. The bride's hair was festooned with pearls.
4. The balcony was festooned with lights for the party.
5. The streets were festooned with flags for the parade.