Christina Aguilera Overjoyed At Britney News

CHRISTINA AGUILERA 'THRILLED' FOR SPEARS CHRISTINA AGUILERA is overjoyed after learning her chart rival BRITNEY SPEARS has become a mother. LADY MARMALADE singer Aguilera admits her former THE MICKEY MOUSE CLUB co-star's pregnancy hadn't really registered until she gave birth to SEAN PRESTON on Wednesday (14SEP05). She tells MTV News, "My assistant came in the room when it happened and she's like, 'Britney had a boy!' and I was like, 'Oh my gosh!' "I don't know where I was for a while when she was pregnant but it really kicked in at that point. It's like, 'Wow, she had a baby! That's crazy!' "I'm overjoyed and thrilled for her. It's such an exciting time in her life and I just wish her the best."

Aguilera says she has already sent Spears a baby gift and a card.

In other news 'SMOOTHIE UNVEILED IN HONOUR OF BRITNEY'S BABY'continues... BRITNEY SPEARS' baby boy SEAN PRESTON is already making waves in the culinary world - a new fruit smoothie has been named in his honour.

The pop beauty and her husband KEVIN FEDERLINE welcomed their child into the world on Wednesday (14SEP05), and just a day later, a new beverage arrived on the menu of Spears' dad JAMIE's Venice, California, eatery JJ Chill.

JJ Chill co-owner, JOSEPH NEJMAN, says, "We're introducing a new smoothie in honour of Britney's boy. We're calling it the Preston Smoothie and it consists of only fat-free frozen yogurt, strawberries and mangoes."