The Beckhams arrived at Heathrow Airport in London this morning after catching a flight from LAX yesterday. Victoria showed off her growing curves as she and David helped get their sons, Romeo, Cruz, and Brooklyn, into a waiting car. David and Victoria are in town to attend the royal wedding tomorrow, since they were some of the lucky celebrities to make the invite list. Victoria shared her excitement to be back in their home country for the event via Twitter, saying "London looks beautiful!!! We are so proud to be British!" The world will be watching to see what bride-to-be Kate Middleton wears, but Victoria's dress of choice is also a hot topic. She's rumored to have selected an outfit from her own Victoria Beckham Collection to be worn with custom Christian Louboutin heels and a Philip Treacy hat — see what other royal wedding guests will be wearing! You can see all the gowns, guests, and more tomorrow when we'll be streaming live coverage of the wedding right here on PopSugar.