Arietta Sweater in Berroco Tiramisu - Downloadable PDF

Arietta Sweater by Amy Christoffers – Knitting Pattern Summary

The Arietta Sweater is a beautifully crafted pullover sweater designed by Amy Christoffers and published by Berroco. Available as a downloadable PDF, this intermediate-level knitting pattern offers a relaxed, wearable silhouette with a generous fit, making it a versatile wardrobe staple for knitters ready to move beyond beginner projects.

What Is Being Made

The Arietta is a classic pullover sweater worked in a comfortable, everyday style. It is designed with 4–6 inches of positive ease, meaning the finished garment is intentionally larger than the wearer's actual bust measurement for a relaxed, contemporary fit. The pattern is offered in six sizes, with finished bust measurements ranging from 38 to 68 inches (96.5 to 172.5 cm), making it an inclusive design suitable for a wide range of body types. Finished lengths range from approximately 20½ to 24½ inches (52 to 62 cm) depending on the size chosen. The sample shown in the pattern is knitted in size 44 inches / 112 cm.

Yarn and Materials

This pattern is specifically written for Berroco Tiramisu, a worsted weight yarn sold in 50-gram balls. The colorway used in the sample is #9209 Mascarpone, a soft, neutral tone that highlights the texture and stitch definition of the design beautifully. Depending on the size being knitted, the pattern calls for between 8 and 16 balls of Berroco Tiramisu, with larger sizes naturally requiring more yardage.

• Yarn: Berroco Tiramisu, worsted weight, 50 g balls
• Colorway shown: #9209 Mascarpone
• Quantity needed: 8–16 balls depending on size

Needles and Notions Required

The Arietta Sweater requires a small collection of tools to complete successfully. Two sizes of circular needles are used, which is common in sweater construction to manage different sections of the garment with appropriate tension and needle length.

• 36-inch / 90 cm circular needle, size US 6 / 4 mm – the primary needle for the main body of the sweater
• 24-inch / 60 cm circular needle, size US 4 / 3.5 mm – used for ribbing or finishing sections requiring a tighter gauge
• Spare circular needle, size US 6 / 4 mm – used to hold stitches during construction
• Crochet hook, size E / 3.5 mm – used for a joining or finishing technique
• 2 stitch markers – for tracking key points in the pattern
• Tapestry needle – for weaving in ends and seaming
• Waste yarn – for holding stitches temporarily during construction

Gauge

Achieving accurate gauge is essential for this pattern. The required gauge is 21 stitches and 27 rows to 4 inches / 10 cm in Stockinette stitch on the larger needle. The pattern explicitly notes that both stitch and row gauge are critically important to ensure the finished sweater matches the intended dimensions. Knitters are strongly encouraged to swatch and adjust needle size as needed before casting on.

Techniques and Stitches Used

The Arietta Sweater is rated as an intermediate knitting pattern, meaning it is best suited for knitters who are comfortable with fundamental techniques and ready to work with more complex construction methods. The use of multiple needle lengths and a crochet hook alongside knitting needles suggests a thoughtful, structured approach to garment shaping and finishing.

• Stockinette stitch (St st): The primary stitch pattern used throughout the body of the sweater, creating a smooth, classic fabric surface
• Circular knitting: The use of circular needles indicates that portions of the sweater are worked in the round, a common technique in modern sweater construction that reduces seaming and creates a seam