Easy little crocheted sweater (since it has sleeve openings) was made with Bebe Tamm, colors red gray stripe (5) and red (1) . It's a very soft thin yarn that's sooo easy to work with. And comes in tons of colors.
Buy the pattern kit which includes the pattern and 6 skeins of yarn in your choice of colors or just the pattern. The pattern will be delivered within 24 hours in an email as a PDF attachment.