Berroco Arietta Jumper Knitting Pattern

Berroco Arietta Knit Sweater

What is Being Made

The Arietta is an intermediate-level knit sweater designed by Amy Christoffers. This pullover garment is available in six sizes ranging from 38 inches to 68 inches bust measurement, with finished lengths between 20½ and 24½ inches. The sweater is constructed using a unique side-to-side building method, where two body sections are worked separately from the sleeve cuffs toward the center back before being grafted together.

Construction and Techniques

The Arietta employs a sophisticated two-section construction method that differs from traditional top-down or bottom-up approaches. Each section begins at the sleeve cuff and progresses horizontally to the center back of the garment. This technique allows for strategic shaping and stitch placement throughout the piece.

Key construction techniques include:

• Kitchener Stitch grafting used to join the back seam and front sections, creating seamless connections between the two halves
• Increases worked at marked intervals to shape the garment as it expands from the sleeve toward the body
• Circular needle construction for working flat sections with the flexibility of circular needles
• Stitch markers placed strategically to denote increase points and pattern sections

Stitches Used

The primary stitch throughout the Arietta is Stockinette Stitch (St st), which creates the classic smooth, V-patterned fabric characteristic of knit garments. The pattern incorporates Make One Left (M1L) and Make One Right (M1R) increases to add stitches while maintaining stitch definition. The cuff section begins with garter stitch (knit every row), which provides a textured, elastic edge before transitioning to stockinette stitch for the body.

Materials and Tools

The Arietta is worked in Berroco Tiramisu, a yarn that comes in 50-gram balls. The colorway shown is #9209 Mascarpone. Yardage requirements vary by size, ranging from 8 balls for the smallest size to 16 balls for the largest size.

Required needles and notions include:

• 36-inch circular needle in size 6 / 4 mm (larger needle for main fabric)
• 24-inch circular needle in size 4 / 3.5 mm (smaller needle for cuffs and ribbing)
• Spare circular needle in size 6 / 4 mm for holding stitches
• Size E / 3.5 mm crochet hook for finishing details
• Two stitch markers for tracking pattern sections
• Tapestry needle for weaving in yarn ends
• Waste yarn for temporarily holding stitches during construction

Gauge and Fit

The pattern specifies a gauge of 21 stitches and 27 rows over 4 inches in Stockinette Stitch using the larger needle. The pattern emphasizes that both stitch and row gauge are critical for achieving accurate finished measurements. The Arietta is designed with 4 to 6 inches of positive ease, meaning the finished bust measurement will be 4 to 6 inches larger than the wearer's actual bust for a comfortable, relaxed fit.