The cold-formed steel (CFS) members are cross-sectionally slender and their buckling capacity is largely controlled by their geometric shape. Owing to the thin cross-section, the geometric shape can be altered during the cold-forming process or handling. These minor deviations from the desired shape can have a substantial effect on the structural performance of a CFS members. These cross-sectional deviations are generally categorised into local and distortional imperfections. These imperfections exhibit significant impact on the buckling capacity of the member, based on the buckling behaviour of the CFS member. This study investigates the impact of distortional geometric imperfections on the buckling strength of a lipped channel sections. However, to account the randomness involves in the imperfections, a probabilistic framework in the form of Monte Carlo simulation is employed. In order to find the buckling strength of a CFS member in distortion, a nonlinear finite element analysis is adopted for the selected section. The selection of the desired section is performed based on elastic buckling analysis using CUFSM. The simulation results highlight the fact that distortional imperfections significantly decrease the buckling strength of a member. In fact, the reduction, at the recommended design level, in the strength is observed to be 38.18%. Eventually, the obtained values are compared with the DSM predictions of distortional strength for lipped channel member.