Articles & Guides Child care advice Easy Halloween Costume for an Infant: 50 Shades of Grey Care.com CanadaUpdated on: January 20, 2023 Share on Facebook Share on Twitter Share on LinkedIn Share on Pinterest Share on Email Materials: Gray onesie Black fabric marker Gray pants Gray socks Necktie (optional) Step 1: Lay out onesie. With marker, write out across onesie 50 SHADES. Step 2: Put on outfit. Tie neck tie loosely around baby (optional). Wait for laughs!