All eyes will be on Pippa Middleton's royal guests – Prince Harry and his girlfriend Meghan Markle – when they attend the wedding of the year later this month. Although the sister of the Duchess of Cambridge was earlier said to have imposed a 'no ring, no bring' policy on her wedding guests, she seems to have made an exception for the Suits actress.

Instead of just attending the wedding reception of Pippa and James Matthews, reports claim that Markle will be present for all the different ceremonies, with her boyfriend Harry in tow.

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The 35-year-old TV star has already cleared her calendar and started making preparations for her coveted appearance at the wedding. According to E! News, Markle has even started narrowing down her outfits as she moves from one dress fitting to another in Toronto.

The exact details on what Markle will be wearing are still unknown, but she might just accessorise with a hat for the formal parts of the ceremony.

The high-profile nuptials will be underway on 20 May, when 33-year-old Pippa walks down the aisle with her hedge-fund millionaire fiancé in a private ceremony at St Mark's Church in Berkshire. Away from prying eyes, the wedding that is to take place near the Middleton home, expects to see some high-profile guests, such as Prince George and Princess Charlotte.

Pippa Middleton and Meghan Markle
Meghan Markle is preparing to attend Pippa Middleton's intimate wedding ceremony on 20 May Getty

These two special guests will reportedly play starring roles as page boy and flower girl at their aunt's wedding. A spokesman for the bride-to-be declined to "comment on the guest list".

Apart from the royal invitees, reality star and younger brother of James, Spencer Matthews will also be present at the wedding. While he serves as the best man for his brother, the Made in Chelsea star's model girlfriend Vogue Williams has reportedly been excluded from the guest list.

According to sources, Pippa's thinks "it wouldn't be appropriate for her to be there after just a few months of dating".

"Vogue has a prior engagement in her diary on the date of the wedding, but wishes Pippa and James all the best on their special day", a spokesperson for Williams has said.

However, Markle and Harry's appearance is much anticipated, which will follow their recent loved-up display at the polo games in Ascot.

Meghan Markle Prince Harry