Brad Pitt and Angelina Jolie are keeping their promise that family comes first.

Hottest Hollywood power couple reunites to spend their Valentine's Day together in London. The "Moneyball" actor flew in with their son Maddox from Los Angeles while Jolie took a break from filming her new film "Unbroken" in Australia.

The Tomb Raider star was seen in an off-shoulder sweater and black jeans, waving to fans as her family walked through the airport terminal.

An insider told E! News that she can't help but gush over the couple's chemistry: ''They are the perfect family. Brad is so hot, Angelina is beautiful and the kids are gorgeous. They all looked so happy together."

Meanwhile, Brad Pitt should add "thoughtful father" to his resume as her three daughters- Zahara, nine, Shiloh, seven and Vivienne, five, got a sweet, expensive gifts on cupid's day.

The 50-year old actor reportedly bought her three girls "Neil Lane diamond heart necklaces, totalling $12, 000," an insider told Life & Style magazine.

For Brad Pitt, this is all part of a father's natural duty as he stressed the importance of making his children feel loved.

"I can't place the importance of one child over that of any other. I have seen children suffer far beyond what we experience in America - like our oldest daughter," he told Parade magazine in 2011 when asked about the couple's adoption of Zahara.

"I know she would not be alive [if she had not been adopted]. I know what care was available to her and it was nil. I cannot imagine life without her," The "Fight Club" star explained.

Having six children can be hard work but Pitt is quick to point out that his life is exactly what he wants it to be. In an interview with Esquire last year, he told the magazine about his favourite job in the world:

"There's constant chatter in our house, whether it's giggling or screaming or crying or banging. I love it. I love it. I love it. I hate it when they're gone."