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Sir Paul McCartney laid flowers for the late star at a memorial in LA.
The former Beatle arrived with his wife Nancy Shevell to lay down a bouquet of yellow flowers, blowing two kisses and saying a few words before he left.
McCartney joins a host of celebrities, including likes of Beyonce and Rihanna, who have paid tribute to Houston.
The I Will Always Love You singer was 48 when she passed away on Saturday.