Celebrity News:

TMZ spotted Avril Lavigne and hubby rocker Deryck Whibley shopping up a storm on Robertson Blvd. yesterday ... but could it be for a wee Whiblet or Whiblette?

Consider the evidence: The couple dropped around $500 at Lisa Kline Kids, purchasing everything from a cheetah diaper bag to baby AC/DC tees, and, of course, a camo pacifier holder. Sounds a lot like she's preparing for life to get more complicated. She also made her way down the block to Kitson Kids pick up a few odds and ends too.

What's more, says a TMZ spy, "She definitely looks like she has a bump." Her reps had no comment.

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