The retired footballer, 39, may have just unveiled his range for luxury menswear brand Belstaff, but he still accepts a bit of help when it comes to dressing himself.
READ: VICTORIA BECKHAM: "I GET INTO BED WITH DAVID AND THINK ABOUT CLOTHES!"
Appearing on the Lorraine show, he said: "She'll come in and she'll want to put my belt on or she'll want to dress me or she'll say 'Daddy wear those shoes with that', it's amazing actually."
David – who is also father to sons Brooklyn, 15, Romeo, 11 and nine-year-old Cruz – confessed having a daughter is very different.
READ: VICTORIA BECKHAM TO SELL OFF 600-PIECE WARDROBE FOR CHARITY AFTER 'LIFE-CHANGING' TRIP TO SOUTH AFRICA
He said: "It'll take [Harper] a good 20 minutes to decide what to wear and then she'll just change her mind… I'm not used to that.
"We've obviously got three boys and they kind of just stick on anything and they're happy. apart from the middle one, Romeo is a bit more selective but with Harper, she changes her mind all the time."
It sounds like Harper is definitely following in fashion designer mummy Victoria's designer heels.
READ: DAVID BECKHAM TALKS PARENTING AND ADMITS HE'S A STRICT DAD
As they were discussing fashion, some of David's own questionable outfits from the past came up – meaning THAT sarong.
He joked: "Sarongs are great. That's one thing I never regret because I thought it looked great and I would still wear it now."
David can pull of almost anything – but we think he should definitely avoid the sarong!