From the pattern notes:

• To fit chest sizes: 46 (51) cm/18 (20) inches
• Actual measurements: 51 (56) cm/20 (22) inches
• Length from Back of Neck: 25.5 (29) cm/10 (11½) inches
• Sleeve Seam: 15 (16.5) cm/6 (6½) inches
• Bonnet (width around face): 29 (34.5) cm/11½ (13½) inches
• Yarn: Peter Pan Darling 4 Ply (20g), 4 (5) for Matinee Jacket, 1 for Bonnet or Bootees.
• 3 buttons for jacket, 2 buttons for bootees
• Ribbon for bonnet
• Stitch holders

The pattern is on page 75 of The Baby Knitting & Crochet Book, and illustrated on page 76. It is called Jacket, Bonnet and Bootees in the book, without the number T45, which is used in the Peter Pan booklet.