Scotland international Caroline Weir curled home a brilliant left-footed strike from outside the box into the top corner to give Real Madrid a seventh-minute lead.

The hosts had to wait until the 72nd minute to double their advantage against a stubborn Celtic through Signe Bruun's header.

Caroline Moller came off the bench and added a wonderful third with a 30-yard lob, before Colombian star Linda Caicedo rounded off the scoring with a penalty.

Real Madrid, bidding to avoid a third straight group-stage exit, moved level on three points after two matches with Chelsea and Twente, who meet later Thursday, in Group B.

Six different players scored as Roma continued their flying start to Group A with a 6-1 rout of tournament debutants Galatasaray in Istanbul.