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It’s a busy summer for Jennifer Lopez as she jets to Europe promoting her album, ‘Love?’, presumably with countless fashion options in tow.

On Saturday in Spain, J.Lo made an appearance on the high-spirited hit TV show ‘Wettan Das’ (a German variety series), to perform and give an interview.

Lopez, 41, sang for fans in a black mini and stillettos.

But first, host Thomas Gottschalk welcomed Lopez onto a temporary outdoor set inside a bullfighting arena, to sit on a sofa for a chat. Looking fabulous in a flowing, low-cut maxi dress, Lopez reached down — and that’s when she pulled a brief Janet Jackson on live TV.