Vicki Gunvalson had a great birthday party but there was one person missing — Gretchen Rossi. HollywoodLife.com spoke to a source who says that Gretchen was the only one out of The Real Housewives of O.C. cast that didn’t show up. Do you think that was rude?

“There’s a feud between Gretchen and Vicki,” the source tells us. “And Vicki and Alexis are bonding over it. They are also both visibly annoyed about Gretchen and Tamra’s new friendship.”

The source adds that although Gretchen was invited, she thought she might have been disinvited after her fiance Slade called Vicki Miss Piggy.

— Reporting by Katrina Mitzeliotis, written by Chloe Melas

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Tamra struts her stuff, Fernanda makes a startling confession, and Peggy preps for the perfect pool party!

The April 24 episode of The Real Housewives of Orange County started out with a big birthday surprise for Gretchen Rossi! Slade takes her on a romantic trip – to his art gallery (who knew he was such an artiste)! He makes her throw on a smock and try her hand at doodling. It’s not quite the glitzy diamond necklace she wanted. But Gretchen’s totally flattered when he pulls out the big guns: a life-size portrait of his princess!

Meanwhile, Vicki Gunvalson invites Alexis Bellino over for a little chitchat to clear the air about the whole “mace” incident from a few weeks back. Alexis forgives, but isn’t quite ready to forget. Looks like Vicki will have to prove she’s not a backstabbing businesswoman when the ladies get together for a major shindig during next week’s episode.

In other news, it’s time for an OC-style fashion show! Peggy Tanous is a natural-born hostess. Tamra Barney, on the other hand, gets a mean case of the stomach-churning butterflies before making her model debut. But she ends up rocking the runway – and even high-fives housewife frenemy, Jeana Keough, after strutting her stuff. Oh, what a boost of catwalk confidence can do for a lady!

Finally, the episode ends with a shocking confession by Fernanda Rocha! In typical kiss-and-tell fashion, Fernanda explains that the hot kiss she shared with Tamra a few weeks back was more than just a friendly peck – it was a real connection. Not sure what Tamra’s side of the story is, but we’ll soon find out what she thinks about all of this when the two reunite on next week’s episode!

– Katie Moore

The super-hot OC housewife has to put her party planning skills to the ultimate test!

Gretchen’s on a top-secret mission to keep her parents’ 40th wedding anniversary a big surprise!

But the pressure’s heating up! Gretchen has to handle the dress, the ring, the cake — and even her boy Slade seems a little stressed by her never-ending list of chores and shenanigans!

Will she cave under pressure? Or hit a home run and give her folks the time of their lives?

Get more behind-the-scenes sexy and watch all of the drama unfold when The Real Housewives of Orange County airs on Bravo tonight at 10:00 p.m.!

– Katie Moore

Last week on ‘Real Housewives of OC’…