The 2017 SWPL Cup Runners-up progressed after beating St Johnstone 4-0, despite missing two penalties.
Celtic gave a debut to new signing Josephine Giard and she had a half-chance to score her debut goal in the opening minutes, but couldn’t quite get on the end of Nicole Pullar’s through-ball.
Celtic thought they had taken the lead in the 26th minute, only for Heather Richards’ effort to be ruled out for offside.
But Richards would be the provider for the opener nine minutes later as her cross was headed in by Ruesha Littlejohn, off the post.
Two minutes into the second half, Celtic won a penalty but Giard saw her effort rebound off the post. But the next minute, Celtic did take the lead as Pullar headed in Colette Cavanagh’s cross.
Once again, Celtic won a penalty, but this time it was Pullar who took it. Her effort was saved the keeper who made a follow-up save to deny Littlejohn.
In the 71st minute, they scored their third goal after good play between their front two saw Pullar find the bottom corner.
And in the final stages, Richards found the back of the net after being set up by Pullar.