In the following year she disappointed in the 1000 Guineas, but won the Summer Stakes before her season was ended by injuries sustained in the Prix Maurice de Gheest.
[4] Serious Attitude entered the ownership of The Purple and Yellow Partnership and was sent into training with Rae Guest at his Chestnut Tree Stable in Newmarket.
Serious Attitude made her debut in a maiden race over six furlongs at Windsor Racecourse on 10 August and started at odds of 9/2 in a twelve-runner field.
Ridden by David Probert she started slowly but moved up to take the lead approaching the final furlong before drawing away in the closing stages to win by five lengths from Kingswinford.
Four weeks after her win at Salisbury, Serious Attitude was stepped up to the highest class for the Group One Cheveley Park Stakes at Newmarket Racecourse on 3 October and started the 4/1 favourite in a field of sixteen.
She took the lead inside the final furlong and won by half a length from Aspen Darlin, with Pursuit of Glory and Adorn close behind in third and fourth.
[10] Ahern was again in the saddle when the filly was sent to France and returned to Group One class for the Prix Maurice de Gheest over 1300 metres at Deauville Racecourse in August.
[11] On her first appearance as a four-year-old, Serious Attitude started favourite for the Listed Kilvington Fillies' Stakes at Nottingham Racecourse in May but was beaten half a length by the five-year-old mare Prescription.
Gomez restrained the filly in the early stages and she was still only tenth as Bridgetown, Fatal Bullet and Sneaking Uponyou led the field into the straight.